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  <xs:element id="crai_ScheduleOfBadDebtExpenseTableTextBlock" abstract="false" name="ScheduleOfBadDebtExpenseTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="crai_ScheduleOfReimbursableExpensesIncludedInRevenuesTableTextBlock" abstract="false" name="ScheduleOfReimbursableExpensesIncludedInRevenuesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="crai_ScheduleOfForgivableLoansActivityTableTextBlock" abstract="false" name="ScheduleOfForgivableLoansActivityTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="crai_NumberOfBroadAreasOfConsultingServices" abstract="false" name="NumberOfBroadAreasOfConsultingServices" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="crai_CountriesOtherThanUnitedStatesUnitedKingdomMember" abstract="true" name="CountriesOtherThanUnitedStatesUnitedKingdomMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="crai_ReimbursableExpensesSubjectToReimbursement" abstract="false" name="ReimbursableExpensesSubjectToReimbursement" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_ForgivableLoansTable" abstract="true" name="ForgivableLoansTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="crai_ForgivableLoansLineItems" abstract="true" name="ForgivableLoansLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="crai_ForgivableLoanTerm" abstract="false" name="ForgivableLoanTerm" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="crai_ForgivableLoansInterestRate" abstract="false" name="ForgivableLoansInterestRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="crai_LoansAndLeasesReceivableRelatedPartiesAmortizationInvoluntaryTermination" abstract="false" name="LoansAndLeasesReceivableRelatedPartiesAmortizationInvoluntaryTermination" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_ForgivableLoanActivityRollForward" abstract="true" name="ForgivableLoanActivityRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="crai_ForgivableLoans" abstract="false" name="ForgivableLoans" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_ForgivableLoansAdvances" abstract="false" name="ForgivableLoansAdvances" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_ForgivableLoansRepayments" abstract="false" name="ForgivableLoansRepayments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_ForgivableLoansReclassificationFromAccruedExpensesToOtherAssets" abstract="false" name="ForgivableLoansReclassificationFromAccruedExpensesToOtherAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_ForgivableLoansAmortization" abstract="false" name="ForgivableLoansAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_ForgivableLoansTranslationAdjustments" abstract="false" name="ForgivableLoansTranslationAdjustments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_AllocatedShareBasedCompensationExpenseCurrentAcceleratedVestingOfAwards" abstract="false" name="AllocatedShareBasedCompensationExpenseCurrentAcceleratedVestingOfAwards" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_AccruedProjectCostsCurrent" abstract="false" name="AccruedProjectCostsCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_CreditAgreementMember" abstract="true" name="CreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="crai_LineOfCreditFacilityMaximumBorrowingCapacityReduced" abstract="false" name="LineOfCreditFacilityMaximumBorrowingCapacityReduced" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="crai_FinancialCovenantsMaximumConsolidatedNetLeverageRatio" abstract="false" name="FinancialCovenantsMaximumConsolidatedNetLeverageRatio" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="crai_FinancialCovenantsMinimumConsolidatedInterestCoverageRatio" abstract="false" name="FinancialCovenantsMinimumConsolidatedInterestCoverageRatio" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="crai_OperatingSegmentMember" abstract="true" name="OperatingSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="crai_ClientReimbursableExpenses" abstract="false" name="ClientReimbursableExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
