

<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.comscore.com/20150930" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:scor="http://www.comscore.com/20150930" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:import namespace="http://fasb.org/us-gaap/2014-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-roles/2014-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2014/elts/us-roles-2014-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-types/2014-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2014/elts/us-types-2014-01-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/net" schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/country/2013-01-31" schemaLocation="http://xbrl.sec.gov/country/2013/country-2013-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/currency/2014-01-31" schemaLocation="http://xbrl.sec.gov/currency/2014/currency-2014-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2014-01-31" schemaLocation="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/exch/2014-01-31" schemaLocation="http://xbrl.sec.gov/exch/2014/exch-2014-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/invest/2013-01-31" schemaLocation="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/naics/2011-01-31" schemaLocation="http://xbrl.sec.gov/naics/2011/naics-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/sic/2011-01-31" schemaLocation="http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/stpr/2011-01-31" schemaLocation="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="scor-20150930_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="scor-20150930_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="scor-20150930_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="scor-20150930_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple" />
      <link:roleType id="AssetDispositionsDetails" roleURI="http://www.comscore.com/role/AssetDispositionsDetails">
        <link:definition>2403402 - Disclosure - Asset Dispositions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AssetDispositionsNotes" roleURI="http://www.comscore.com/role/AssetDispositionsNotes">
        <link:definition>2103100 - Disclosure - Asset Dispositions (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AssetDispositionsTables" roleURI="http://www.comscore.com/role/AssetDispositionsTables">
        <link:definition>2303301 - Disclosure - Asset Dispositions (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessCombinationsAcquiredIntangibleAssetsDetails" roleURI="http://www.comscore.com/role/BusinessCombinationsAcquiredIntangibleAssetsDetails">
        <link:definition>2402403 - Disclosure - Business Combinations - Acquired Intangible Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessCombinationsAllocationTableDetails" roleURI="http://www.comscore.com/role/BusinessCombinationsAllocationTableDetails">
        <link:definition>2402404 - Disclosure - Business Combinations - Allocation Table (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessCombinationsNarrativeDetails" roleURI="http://www.comscore.com/role/BusinessCombinationsNarrativeDetails">
        <link:definition>2402402 - Disclosure - Business Combinations - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessCombinationsNotes" roleURI="http://www.comscore.com/role/BusinessCombinationsNotes">
        <link:definition>2102100 - Disclosure - Business Combinations (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessCombinationsTables" roleURI="http://www.comscore.com/role/BusinessCombinationsTables">
        <link:definition>2302301 - Disclosure - Business Combinations (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheets" roleURI="http://www.comscore.com/role/ConsolidatedBalanceSheets">
        <link:definition>1001000 - Statement - CONSOLIDATED BALANCE SHEETS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheetsParenthetical" roleURI="http://www.comscore.com/role/ConsolidatedBalanceSheetsParenthetical">
        <link:definition>1001501 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfCashFlows" roleURI="http://www.comscore.com/role/ConsolidatedStatementsOfCashFlows">
        <link:definition>1004000 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfOperationsAndComprehensiveLoss" roleURI="http://www.comscore.com/role/ConsolidatedStatementsOfOperationsAndComprehensiveLoss">
        <link:definition>1002000 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfOperationsAndComprehensiveLossParenthetical" roleURI="http://www.comscore.com/role/ConsolidatedStatementsOfOperationsAndComprehensiveLossParenthetical">
        <link:definition>1002001 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfStockholdersEquity" roleURI="http://www.comscore.com/role/ConsolidatedStatementsOfStockholdersEquity">
        <link:definition>1003000 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS&#8217; EQUITY</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Contingencies" roleURI="http://www.comscore.com/role/Contingencies">
        <link:definition>2108100 - Disclosure - Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DocumentAndEntityInformation" roleURI="http://www.comscore.com/role/DocumentAndEntityInformation">
        <link:definition>0001000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeographicInformation" roleURI="http://www.comscore.com/role/GeographicInformation">
        <link:definition>2112100 - Disclosure - Geographic Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeographicInformationCompositionOfCompanysPropertyAndEquipmentDetail" roleURI="http://www.comscore.com/role/GeographicInformationCompositionOfCompanysPropertyAndEquipmentDetail">
        <link:definition>2412402 - Disclosure - Geographic Information (Composition of Company's Property and Equipment) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeographicInformationTables" roleURI="http://www.comscore.com/role/GeographicInformationTables">
        <link:definition>2312301 - Disclosure - Geographic Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndIntangibleAssets" roleURI="http://www.comscore.com/role/GoodwillAndIntangibleAssets">
        <link:definition>2106100 - Disclosure - Goodwill and Intangible Assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndIntangibleAssetsCarryingValueOfGoodwillDetail" roleURI="http://www.comscore.com/role/GoodwillAndIntangibleAssetsCarryingValueOfGoodwillDetail">
        <link:definition>2406402 - Disclosure - Goodwill and Intangible Assets (Carrying Value of Goodwill) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndIntangibleAssetsEstimatedFutureAmortizationOfAcquiredIntangibleAssetsDetail" roleURI="http://www.comscore.com/role/GoodwillAndIntangibleAssetsEstimatedFutureAmortizationOfAcquiredIntangibleAssetsDetail">
        <link:definition>2406406 - Disclosure - Goodwill and Intangible Assets (Estimated Future Amortization of Acquired Intangible Assets) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndIntangibleAssetsNarrativeDetail" roleURI="http://www.comscore.com/role/GoodwillAndIntangibleAssetsNarrativeDetail">
        <link:definition>2406404 - Disclosure - Goodwill and Intangible Assets (Narrative) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndIntangibleAssetsScheduleOfAcquiredIntangibleAssetsDetail" roleURI="http://www.comscore.com/role/GoodwillAndIntangibleAssetsScheduleOfAcquiredIntangibleAssetsDetail">
        <link:definition>2406403 - Disclosure - Goodwill and Intangible Assets (Schedule of Acquired Intangible Assets) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndIntangibleAssetsTables" roleURI="http://www.comscore.com/role/GoodwillAndIntangibleAssetsTables">
        <link:definition>2306301 - Disclosure - Goodwill and Intangible Assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndIntangibleAssetsWeightedAverageRemainingAmortizationPeriodDetail" roleURI="http://www.comscore.com/role/GoodwillAndIntangibleAssetsWeightedAverageRemainingAmortizationPeriodDetail">
        <link:definition>2406405 - Disclosure - Goodwill and Intangible Assets (Weighted Average Remaining Amortization Period) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://www.comscore.com/role/IncomeTaxes">
        <link:definition>2109100 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesNarrativeDetail" roleURI="http://www.comscore.com/role/IncomeTaxesNarrativeDetail">
        <link:definition>2409401 - Disclosure - Income Taxes (Narrative) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtAndOtherFinancingArrangement" roleURI="http://www.comscore.com/role/LongTermDebtAndOtherFinancingArrangement">
        <link:definition>2107100 - Disclosure - Long-term Debt and Other Financing Arrangement</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtAndOtherFinancingArrangementNarrativeDetail" roleURI="http://www.comscore.com/role/LongTermDebtAndOtherFinancingArrangementNarrativeDetail">
        <link:definition>2407402 - Disclosure - Long-term Debt and Other Financing Arrangement (Narrative) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtAndOtherFinancingArrangementScheduleOfFutureMinimumPaymentsForCapitalLeasesDetail" roleURI="http://www.comscore.com/role/LongTermDebtAndOtherFinancingArrangementScheduleOfFutureMinimumPaymentsForCapitalLeasesDetail">
        <link:definition>2407403 - Disclosure - Long-term Debt and Other Financing Arrangement (Schedule of Future Minimum Payments for Capital Leases) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtAndOtherFinancingArrangementTables" roleURI="http://www.comscore.com/role/LongTermDebtAndOtherFinancingArrangementTables">
        <link:definition>2307301 - Disclosure - Long-term Debt and Other Financing Arrangement (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Organization" roleURI="http://www.comscore.com/role/Organization">
        <link:definition>2101100 - Disclosure - Organization</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RelatedPartyTransactionsDetails" roleURI="http://www.comscore.com/role/RelatedPartyTransactionsDetails">
        <link:definition>2413402 - Disclosure - Related Party Transactions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RelatedPartyTransactionsNotes" roleURI="http://www.comscore.com/role/RelatedPartyTransactionsNotes">
        <link:definition>2113100 - Disclosure - Related Party Transactions (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RelatedPartyTransactionsTables" roleURI="http://www.comscore.com/role/RelatedPartyTransactionsTables">
        <link:definition>2313301 - Disclosure - Related Party Transactions (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareRepurchases" roleURI="http://www.comscore.com/role/ShareRepurchases">
        <link:definition>2111100 - Disclosure - Share Repurchases</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareRepurchasesDetails" roleURI="http://www.comscore.com/role/ShareRepurchasesDetails">
        <link:definition>2411402 - Disclosure - Share Repurchases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareRepurchasesTables" roleURI="http://www.comscore.com/role/ShareRepurchasesTables">
        <link:definition>2311301 - Disclosure - Share Repurchases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquity" roleURI="http://www.comscore.com/role/StockholdersEquity">
        <link:definition>2110100 - Disclosure - Stockholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityNarrativeDetail" roleURI="http://www.comscore.com/role/StockholdersEquityNarrativeDetail">
        <link:definition>2410402 - Disclosure - Stockholders' Equity (Narrative) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityNonvestedStockAwardsDetail" roleURI="http://www.comscore.com/role/StockholdersEquityNonvestedStockAwardsDetail">
        <link:definition>2410404 - Disclosure - Stockholders' Equity (Nonvested Stock Awards) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquitySharesReservedForIssuanceDetail" roleURI="http://www.comscore.com/role/StockholdersEquitySharesReservedForIssuanceDetail">
        <link:definition>2410405 - Disclosure - Stockholders' Equity (Shares Reserved for Issuance) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityStockOptionActivityDetail" roleURI="http://www.comscore.com/role/StockholdersEquityStockOptionActivityDetail">
        <link:definition>2410403 - Disclosure - Stockholders' Equity (Stock Option Activity) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityTables" roleURI="http://www.comscore.com/role/StockholdersEquityTables">
        <link:definition>2310301 - Disclosure - Stockholders' Equity (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEvent" roleURI="http://www.comscore.com/role/SubsequentEvent">
        <link:definition>2114100 - Disclosure - Subsequent Event</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEventSubsequentEventsDetails" roleURI="http://www.comscore.com/role/SubsequentEventSubsequentEventsDetails">
        <link:definition>2414401 - Disclosure - Subsequent Event Subsequent Events (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPolicies" roleURI="http://www.comscore.com/role/SummaryOfSignificantAccountingPolicies">
        <link:definition>2101100 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesNarrativeDetail" roleURI="http://www.comscore.com/role/SummaryOfSignificantAccountingPoliciesNarrativeDetail">
        <link:definition>2401403 - Disclosure - Summary of Significant Accounting Policies (Narrative) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesPolicies" roleURI="http://www.comscore.com/role/SummaryOfSignificantAccountingPoliciesPolicies">
        <link:definition>2201201 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesScheduleOfComputingBasicAndDilutedNetLossIncomePerCommonShareDetail" roleURI="http://www.comscore.com/role/SummaryOfSignificantAccountingPoliciesScheduleOfComputingBasicAndDilutedNetLossIncomePerCommonShareDetail">
        <link:definition>2401405 - Disclosure - Summary of Significant Accounting Policies (Schedule of Computing Basic and Diluted Net (Loss) Income Per Common Share) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesScheduleOfUsefulLivesOfFiniteLivedIntangibleAssetsDetail" roleURI="http://www.comscore.com/role/SummaryOfSignificantAccountingPoliciesScheduleOfUsefulLivesOfFiniteLivedIntangibleAssetsDetail">
        <link:definition>2401404 - Disclosure - Summary of Significant Accounting Policies (Schedule of Useful Lives of Finite Lived Intangible Assets) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesSummaryOfCommonStockEquivalentsForSecuritiesOutstandingDetail" roleURI="http://www.comscore.com/role/SummaryOfSignificantAccountingPoliciesSummaryOfCommonStockEquivalentsForSecuritiesOutstandingDetail">
        <link:definition>2401406 - Disclosure - Summary of Significant Accounting Policies (Summary of Common Stock Equivalents for the Securities Outstanding) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesTables" roleURI="http://www.comscore.com/role/SummaryOfSignificantAccountingPoliciesTables">
        <link:definition>2301302 - Disclosure - Summary of Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element abstract="true" id="scor_AcquiredMethodologiesTechnologyMember" name="AcquiredMethodologiesTechnologyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_AcquiredRelationshipTechnologyMember" name="AcquiredRelationshipTechnologyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_AlternativeCurrencyLendingMember" name="AlternativeCurrencyLendingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_ApplicableRateMember" name="ApplicableRateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_AssetAcquiredThroughIssuanceOfCapitalLeases" name="AssetAcquiredThroughIssuanceOfCapitalLeases" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_BankofAmericaMember" name="BankofAmericaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_BaseRateandSwingLinesMember" name="BaseRateandSwingLinesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_BasisOfPresentationAndConsolidationPolicyTextBlock" name="BasisOfPresentationAndConsolidationPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_BusinessAcquisitionEquityInterestIssuedorIssuableDifferenceFromMarket" name="BusinessAcquisitionEquityInterestIssuedorIssuableDifferenceFromMarket" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_CSWSMember" name="CSWSMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_CommonStockSharesReceivedForTaxWithholding" name="CommonStockSharesReceivedForTaxWithholding" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_CommonStockValueReceivedForTaxWithholding" name="CommonStockValueReceivedForTaxWithholding" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="scor_DecreaseInBasicEarningsPerShare" name="DecreaseInBasicEarningsPerShare" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_DisposalGroupCarryingValueofNetAssetsDisposed" name="DisposalGroupCarryingValueofNetAssetsDisposed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="scor_DisposalGroupNetAssetLiabilityCarryingValueofNetAssetsDisposedLessCustomerObligations" name="DisposalGroupNetAssetLiabilityCarryingValueofNetAssetsDisposedLessCustomerObligations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="scor_DocumentDocumentandEntityInformationAbstract" name="DocumentDocumentandEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_EurocurrencyRateLoanMember" name="EurocurrencyRateLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_EurocurrencyRateMember" name="EurocurrencyRateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_FedFundsRateMember" name="FedFundsRateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_InterimFinancialInformationPolicyPolicyTextBlock" name="InterimFinancialInformationPolicyPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_June2013ShareRepurchaseProgramMember" name="June2013ShareRepurchaseProgramMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_June2014ShareRepurchaseProgramMember" name="June2014ShareRepurchaseProgramMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_KanturGroupsEuropeanIAMBusinessMember" name="KanturGroupsEuropeanIAMBusinessMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_LineofCreditFacilityEquityRepurchaseLimit" name="LineofCreditFacilityEquityRepurchaseLimit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="scor_LineofCreditFacilityHigherBorrowingCapacityOption" name="LineofCreditFacilityHigherBorrowingCapacityOption" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="scor_LoanAndSecurityAgreementAmountAvailableUnderAgreement" name="LoanAndSecurityAgreementAmountAvailableUnderAgreement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="scor_LoanAndSecurityAgreementAnnualReductiontoAmountAvailableUnderAgreement" name="LoanAndSecurityAgreementAnnualReductiontoAmountAvailableUnderAgreement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="scor_May2015ShareRepurchaseProgramMember" name="May2015ShareRepurchaseProgramMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_MinimumSharesoutstandingPercentageofTender" name="MinimumSharesoutstandingPercentageofTender" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="scor_NineteenNinetyNineStockOptionPlanAndTwoThousandSevenEquityIncentivePlanMember" name="NineteenNinetyNineStockOptionPlanAndTwoThousandSevenEquityIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_NonmonetaryTransactionAmountofExpenseRecognizedRelatedtoTimingDifference" name="NonmonetaryTransactionAmountofExpenseRecognizedRelatedtoTimingDifference" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="scor_NonmonetaryTransactionGrossOperatingRevenueRecognizedRelatedParty" name="NonmonetaryTransactionGrossOperatingRevenueRecognizedRelatedParty" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="scor_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentNetOfTaxIncludingNoncontrollingInterestPeriodIncreaseDecrease" name="OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentNetOfTaxIncludingNoncontrollingInterestPeriodIncreaseDecrease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_OtherCountryMember" name="OtherCountryMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_PanelMember" name="PanelMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_PaymentsforRepurchaseofCommonStockTreasuryShares" name="PaymentsforRepurchaseofCommonStockTreasuryShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="scor_PercentageCommonStockOutstandingShares" name="PercentageCommonStockOutstandingShares" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_PercentageOfFairValueOfTotalExchangeValueThatCanBeCashAndStillAccountedForAsNonMonetaryTransaction" name="PercentageOfFairValueOfTotalExchangeValueThatCanBeCashAndStillAccountedForAsNonMonetaryTransaction" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_PercentageOfHoldingsForConsolidation" name="PercentageOfHoldingsForConsolidation" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_PercentageofSharesthatVestBasedonExceedingMarketAverageSharePrice" name="PercentageofSharesthatVestBasedonExceedingMarketAverageSharePrice" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_PeriodforSharePriceAverageRequiredforSharestoVest" name="PeriodforSharePriceAverageRequiredforSharestoVest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_ProximicInc.Member" name="ProximicInc.Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_RestrictedStockAndRestrictedStockUnitsMember" name="RestrictedStockAndRestrictedStockUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_RestrictedStockUnitMember" name="RestrictedStockUnitMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_RevenueRecognitionPeriod" name="RevenueRecognitionPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_ScheduleOfAcquiredFiniteLivedIntangibleAssetsWeightedAverageRemainingUsefulLifeTableTextBlock" name="ScheduleOfAcquiredFiniteLivedIntangibleAssetsWeightedAverageRemainingUsefulLifeTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_ScheduleOfGeographicalInformationLineItems" name="ScheduleOfGeographicalInformationLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_ScheduleOfGeographicalInformationTable" name="ScheduleOfGeographicalInformationTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAxis" name="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentPlanAxis" name="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentPlanAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentPlanDomain" name="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentPlanDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_ScheduleOfSharesReservedForIssuanceTableTextBlock" name="ScheduleOfSharesReservedForIssuanceTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_ScheduleOfStockOptionsLineItems" name="ScheduleOfStockOptionsLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_ScheduleOfStockOptionsTable" name="ScheduleOfStockOptionsTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_ServiceArranagementsMember" name="ServiceArranagementsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedAggregateIntrinsicValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedAggregateIntrinsicValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="scor_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_ShareBasedCompensationArrangementByShareBasedPaymentAwardRightOfRepurchaseOfSharesAwardedLapseRate" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardRightOfRepurchaseOfSharesAwardedLapseRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeDomain" name="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_SharePriceAverageMinimumoverPeriod" name="SharePriceAverageMinimumoverPeriod" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_SharePriceIncreaseTargetPercentage" name="SharePriceIncreaseTargetPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_SharebasedCompensationAwardTrancheFourMember" name="SharebasedCompensationAwardTrancheFourMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_StatementConsolidatedBalanceSheetsAbstract" name="StatementConsolidatedBalanceSheetsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_StatementConsolidatedStatementsOfOperationsAndComprehensiveIncomeAbstract" name="StatementConsolidatedStatementsOfOperationsAndComprehensiveIncomeAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_StockBasedCompensation" name="StockBasedCompensation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="scor_StockIssuedDuringPeriodSharesRestrictedStockUnitsVested" name="StockIssuedDuringPeriodSharesRestrictedStockUnitsVested" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_StockIssuedDuringPeriodSharesTreasuryStockReissuedPercentofOutstandingCommonStock" name="StockIssuedDuringPeriodSharesTreasuryStockReissuedPercentofOutstandingCommonStock" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_StockIssuedDuringPeriodValueRestrictedStockAwardVested" name="StockIssuedDuringPeriodValueRestrictedStockAwardVested" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_StockOptionsAndRestrictedStockMember" name="StockOptionsAndRestrictedStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_StockOptionsAndRestrictedStockUnitsMember" name="StockOptionsAndRestrictedStockUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_StockUnderPlansMember" name="StockUnderPlansMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_SummaryOfSignificantAccountingPoliciesLineItems" name="SummaryOfSignificantAccountingPoliciesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_SummaryOfSignificantAccountingPoliciesTable" name="SummaryOfSignificantAccountingPoliciesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="scor_SwingLineMember" name="SwingLineMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_TenderOfferSharePrice" name="TenderOfferSharePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="scor_TwoThousandSevenEquityIncentivePlanMember" name="TwoThousandSevenEquityIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="scor_UnrecognizedTaxBenefitsNetAgainstDeferredTaxAssets" name="UnrecognizedTaxBenefitsNetAgainstDeferredTaxAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="scor_UtilizationOfCapitalLease" name="UtilizationOfCapitalLease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="scor_WPPplcMember" name="WPPplcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>





