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        <CompensationBasedOnRltdOrgsAmt>182225</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>11635</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>642</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>9751</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>27067</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>231320</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>CHILDREN'S SCHOOL SERVICES RELIES ON ITS SOLE MEMBER CHILDREN'S NATIONAL MEDICAL CENTER (DBA CHILDREN'S NATIONAL), TO DETERMINE COMPENSATION FOR CSS' EXECUTIVE DIRECTOR. CHILDREN'S NATIONAL USES AN EXECUTIVE COMPENSATION COMMITTEE, WHICH IS COMPRISED OF INDEPENDENT DIRECTORS, INDEPENDENT COMPENSATION CONSULTANT, COMPENSATION SURVEY OR STUDY, AND APPROVAL BY THE PEOPLE, CULTURE AND COMPENSATION COMMITTEE OF THE CHILDREN'S NATIONAL BOARD TO ESTABLISH COMPENSATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE J, PART I, LINE 7:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION ESTABLISHES QUANTITATIVE TARGETS FOR ITS OFFICERS, KEY EMPLOYEES, AND HIGHEST COMPENSATED EMPLOYEES TO MEET. IF THE METRICS ARE MET, THEN A BONUS IS PAID TO THE INDIVIDUAL. BOTH THE DETERMINATION TO PAY A BONUS AND THE AMOUNT OF THE BONUS IS DETERMINED BY ESTABLISHED FORMULAS AND THE PAYMENT IS NOT CONTINGENT ON THE EXERCISE OF ANY PERSON'S DISCRETION. DUE TO EXTENUATING CIRCUMSTANCES, BONUSES WILL SOMETIMES BE AWARDED EVEN IF METRICS ARE NOT MET. HOWEVER, FOR THIS TO OCCUR, THERE IS A MULTI-LEVEL REVIEW PROCESS AND CONCURRENCE REGARDING THE APPROPRIATENESS OF THE PAYMENT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE J, PART I, LINE 4B:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOLLOWING INDIVIDUALS PARTICIPATED IN A SUPPLEMENTAL NON-QUALIFIED RETIREMENT PLAN. THE CONTRIBUTIONS TO THE SUPPLEMENTAL NON-QUALIFIED RETIREMENT PLAN ARE INCLUDED IN SCHEDULE J, PART II, COLUMN (C) AS PART OF DEFERRED COMPENSATION OR SCHEDULE J, PART II, COLUMN (B)(III) WHEN AMOUNTS ARE DEFERRED AND DISTRIBUTED IN THE SAME CALENDAR YEAR: MARY ANNE HILLIARD $91,225 ALDWIN LINDSAY $111,334 DENICE CORA-BRAMBLE, MD $37,320 NATHANIEL BEERS, MD $84,638 MICHELLE RILEY-BROWN $202.500 ADDITIONALLY, THE FOLLOWING INDIVIDUALS RECEIVED DISTRIBUTIONS FROM THE PLAN THAT WERE DEFERRED ON A PREVIOUSLY FILED FORM 990 AND ARE INCLUDED IN SCHEDULE J, PART II, COLUMN (B)(III) AS TAXABLE WAGES IN THE CURRENT YEAR. KURT D. NEWMAN, MD $464,056 ALDWIN LINDSAY $94,247 NATHANIEL BEERS, MD $71,774 MARY ANNE HILLIARD $65,952 DENICE CORA-BRAMBLE, MD $37,320</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART I, LINE 1:</FormAndLineReferenceDesc>
        <ExplanationTxt>CSS PROVIDES NURSING SERVICES FOR DC PUBLIC AND PUBLIC CHARTER SCHOOLS IN COLLABORATION WITH DC DEPARTMENT OF HEALTH.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART III, LINE 1:</FormAndLineReferenceDesc>
        <ExplanationTxt>ORGANIZATION'S MISSION THE MISSION OF THE CHILDREN'S SCHOOL SERVICES, INC., IS TO ADVANCE THE HEALTH AND WELL-BEING, ACADEMIC SUCCESS, AND LIFE-LONG ACHIEVEMENT OF STUDENTS IN THE DISTRICT OF COLUMBIA. CHILDREN'S SCHOOL SERVICES PROVIDES NURSING SERVICES IN 117 DC PUBLIC AND 96 PUBLIC CHARTER SCHOOLS. FORM 990, PART V: THE FILING ORGANIZATION HAS ENTERED "0" IN PART V, LINE 1A BECAUSE THE ORGANIZATION'S 1099 RETURNS ARE FILED BY AND UNDER THE NAME AND EIN OF CHILDREN'S HOSPITAL, INC., A RELATED ENTITY, UNDER A SHARED SERVICES AGREEMENT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>MEMBERS OR STOCKHOLDERS CHILDREN'S NATIONAL MEDICAL CENTER (DBA CHILDREN'S NATIONAL) IS THE SOLE MEMBER OF CHILDREN'S SCHOOL SERVICES</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>MEMBERS OR STOCKHOLDERS THE SOLE MEMBER OF CHILDREN'S SCHOOL SERVICES HAS THE RIGHT TO APPOINT DIRECTORS OF CHILDREN'S SCHOOL SERVICES</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>MEMBERS OR STOCKHOLDERS THE ARTICLES AND BYLAWS OF CHILDREN'S SCHOOL SERVICES DESCRIBE CERTAIN RIGHTS RESERVED TO THE SOLE MEMBER.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990 REVIEW PROCESS AFTER THE FORM 990 AND ALL SCHEDULES HAVE BEEN PREPARED BY THE ORGANIZATION'S PROFESSIONAL TAX SERVICES PROVIDER THEN THE RELEVANT COMMITTEES OF THE ORGANIZATION, OPERATION LEADERSHIP, AND FINANCE MANAGEMENT REVIEW APPLICABLE PORTIONS OF THE FORM 990. THE COMPLETED FORM 990 IS MADE AVAILABLE TO THE BOARDS OF CHILDREN'S NATIONAL.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>CONFLICT OF INTEREST POLICY MONITORING &amp; ENFORCEMENT CHILDREN'S SCHOOL SERVICES FORMALLY ADOPTED THE CONFLICT OF INTEREST POLICY OF ITS SOLE MEMBER. THE ORGANIZATION'S SOLE MEMBER, CHILDREN'S NATIONAL, MAINTAINS A CONFLICT OF INTEREST POLICY, WHICH REQUIRES EACH OFFICER, DIRECTOR, AND KEY EMPLOYEE COMPLETE A CONFLICT OF INTEREST DISCLOSURE FORM AT LEAST ANNUALLY. IN ADDITION, EACH OFFICER, DIRECTOR, AND KEY EMPLOYEE IS INSTRUCTED TO AMEND THE CONFLICT OF INTEREST DISCLOSURE FORM IMMEDIATELY UPON A CHANGE IN STATUS OF ANY OF THE QUESTIONS ON THE DISCLOSURE FORM. THE DISCLOSURE FORMS ARE REVIEWED ANNUALLY BY THE CHIEF LEGAL OFFICER AND POTENTIAL CONFLICTS OF INTEREST ARE NOTED. THE ORGANIZATION'S BOARD MAKES A DETERMINATION BASED ON THE RECOMMENDATION OF THE CHIEF LEGAL OFFICER AS TO WHICH PERSONS SHOULD BE CONSIDERED "INTERESTED PARTIES" BASED ON THE CRITERIA SET FORTH IN CHILDREN'S NATIONAL'S CONFLICT OF INTEREST POLICY. INDIVIDUALS WITH A POTENTIAL CONFLICT MAY ATTEND A MEETING WHERE THE MATTER IS INTRODUCED AND MAY BE ASKED QUESTIONS RELATED TO THE MATTER BUT ARE THEN EXCUSED FROM THE MEETING FOR ULTIMATE DELIBERATION AND VOTE. FORM 990, PART VI, LINES 13 AND 14: GOVERNING POLICIES THE ORGANIZATION IS GOVERNED BY THE POLICIES OF ITS SOLE MEMBER, CHILDREN'S NATIONAL. THESE POLICIES INCLUDE A WRITTEN WHISTLEBLOWER POLICY AND A WRITTEN DOCUMENT RETENTION AND DESTRUCTION POLICY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>CHILDREN'S SCHOOL SERVICES RELIES ON ITS PARENT, CHILDREN'S NATIONAL, TO DETERMINE COMPENSATION FOR CSS' EXECUTIVE DIRECTOR. CHILDREN'S NATIONAL USED AN EXECUTIVE COMPENSATION COMMITTEE, INDEPENDENT COMPENSATION CONSULTANT, COMPENSATION SURVEY OR STUDY, AND APPROVAL BY THE PEOPLE, CULTURE AND COMPENSATION COMMITTEE OF THE BOARD TO ESTABLISH COMPENSATION. THE COMMITTEE DOCUMENTS ITS DELIBERATIONS AND DECISIONS REGARDING COMPENSATION MATTERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>HOW DOCUMENTS ARE MADE AVAILABLE TO THE PUBLIC CHILDREN'S SCHOOL SERVICES' GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, FINANCIAL STATEMENTS, AND FORM 990 ARE PROVIDED ON REQUEST AND THROUGH PUBLIC FILINGS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>PROGRAM SUPPORT: PROGRAM SERVICE EXPENSES 1,402,177. MANAGEMENT AND GENERAL EXPENSES 155,797. TOTAL EXPENSES 1,557,974. PURCHASED PERSONNEL SERVICES: PROGRAM SERVICE EXPENSES 1,318,262. MANAGEMENT AND GENERAL EXPENSES 146,474. TOTAL EXPENSES 1,464,736. LOCAL RECRUITMENT: PROGRAM SERVICE EXPENSES 2,160. MANAGEMENT AND GENERAL EXPENSES 240. TOTAL EXPENSES 2,400.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
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          <AddressLine1Txt>111 MICHIGAN AVE NW</AddressLine1Txt>
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          <AddressLine1Txt>1 INVENTA PL 6TH FL W</AddressLine1Txt>
          <CityNm>SILVER SPRING</CityNm>
          <StateAbbreviationCd>MD</StateAbbreviationCd>
          <ZIPCd>20910</ZIPCd>
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          <BusinessNameLine1Txt>CNMC</BusinessNameLine1Txt>
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      <IdRelatedTaxExemptOrgGrp>
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          <BusinessNameLine1Txt>BRAINY CAMPS ASSOCIATION</BusinessNameLine1Txt>
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          <AddressLine1Txt>111 MICHIGAN AVE NW</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20010</ZIPCd>
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        <EIN>271547370</EIN>
        <PrimaryActivitiesTxt>CHILD CAMPS</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DC</LegalDomicileStateCd>
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        <PublicCharityStatusTxt>LINE 12A, I</PublicCharityStatusTxt>
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          <BusinessNameLine1Txt>CH</BusinessNameLine1Txt>
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      <IdRelatedTaxExemptOrgGrp>
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          <BusinessNameLine1Txt>CHILDREN'S RESEARCH INSTITUTE</BusinessNameLine1Txt>
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          <AddressLine1Txt>111 MICHIGAN AVE NW</AddressLine1Txt>
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          <StateAbbreviationCd>DC</StateAbbreviationCd>
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        <EIN>521654453</EIN>
        <PrimaryActivitiesTxt>RESEARCH</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DC</LegalDomicileStateCd>
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          <BusinessNameLine1Txt>CNMC</BusinessNameLine1Txt>
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      <IdRelatedTaxExemptOrgGrp>
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          <BusinessNameLine1Txt>THE HSC FOUNDATION</BusinessNameLine1Txt>
        </DisregardedEntityName>
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          <AddressLine1Txt>111 MICHIGAN AVE NW</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
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          <ZIPCd>20010</ZIPCd>
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        <EIN>521346603</EIN>
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          <BusinessNameLine1Txt>THE HOSPITAL FOR SICK CHILDREN</BusinessNameLine1Txt>
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          <AddressLine1Txt>111 MICHIGAN AVE NW</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
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          <BusinessNameLine1Txt>CH</BusinessNameLine1Txt>
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          <BusinessNameLine1Txt>HEALTH SVCS FOR CHILDREN W SPEC NEEDS</BusinessNameLine1Txt>
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          <AddressLine1Txt>111 MICHIGAN AVE NW</AddressLine1Txt>
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          <BusinessNameLine1Txt>CHILDREN'S PEDIATRICIANS AND ASSOCIATES LLC</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>111 MICHIGAN AVE NW</AddressLine1Txt>
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        <PrimaryActivitiesTxt>HEALTH CARE</PrimaryActivitiesTxt>
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        <DisproportionateAllocationsInd>0</DisproportionateAllocationsInd>
        <GeneralOrManagingPartnerInd>0</GeneralOrManagingPartnerInd>
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          <AddressLine1Txt>111 MICHIGAN AVE NW</AddressLine1Txt>
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      <IdRelatedOrgTxblPartnershipGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>5253 HTC LLC</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>111 MICHIGAN AVE NW</AddressLine1Txt>
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        <EIN>833044006</EIN>
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        <RelatedOrganizationName>
          <BusinessNameLine1Txt>54 NMTC LLC</BusinessNameLine1Txt>
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          <AddressLine1Txt>111 MICHIGAN AVE NW</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
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        <RelatedOrganizationName>
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          <AddressLine1Txt>111 MICHIGAN AVE NW</AddressLine1Txt>
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        <USAddress>
          <AddressLine1Txt>111 MICHIGAN AVE NW</AddressLine1Txt>
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        <ControlledOrganizationInd>0</ControlledOrganizationInd>
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          <StateAbbreviationCd>MD</StateAbbreviationCd>
          <ZIPCd>20904</ZIPCd>
        </USAddress>
        <EIN>833415276</EIN>
        <PrimaryActivitiesTxt>HEALTH CARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DC</LegalDomicileStateCd>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <EntityTypeTxt>C</EntityTypeTxt>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>BUILDING 5253 MANAGING MEMBER LLC</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>111 MICHIGAN AVE NW</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20010</ZIPCd>
        </USAddress>
        <EIN>832801690</EIN>
        <PrimaryActivitiesTxt>PROPERTY MANAGEMENT</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DC</LegalDomicileStateCd>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <EntityTypeTxt>C</EntityTypeTxt>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>BUILDING 54 MANAGING MEMBER LLC</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>111 MICHIGAN AVE NW</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20010</ZIPCd>
        </USAddress>
        <EIN>833272918</EIN>
        <PrimaryActivitiesTxt>PROPERTY MANAGEMENT</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DC</LegalDomicileStateCd>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <EntityTypeTxt>C</EntityTypeTxt>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>0</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>0</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>0</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>0</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>0</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>0</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>0</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>0</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>0</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>1</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>0</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>0</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>0</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>1</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>0</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>1</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>0</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>0</TransferFromOtherOrgInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE R, PART II</FormAndLineReferenceDesc>
        <ExplanationTxt>THE HSC FOUNDATION WAS DISSOLVED EFFECTIVE JULY 2, 2024.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleR>
  </ReturnData>
</Return>