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      <Form990PartVIISectionAGrp>
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        <ExplanationTxt>U.S. GAAP requires management to evaluate the tax positions taken and recognize a tax liability (or asset) if the organization has taken an uncertain tax position that more likely than not would not be sustained upon examination by taxing authorities. Management has analyzed the tax positions taken and has concluded that as of June 30, 2017, there are no uncertain tax positions taken or expected to be taken that would require recognition of a tax liability (or asset) or disclosure in the financial statements. The School is subject to routine audits by taxing jurisdictions; however, there are currently no audits for any tax periods in progress.</ExplanationTxt>
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      <SupplementalInformationDetail>
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      <SupplementalInformationDetail>
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        <ExplanationTxt>RACIAL NONDISCRIMINATION POLICY WAS PRINTED IN THE SAN FRANCISCO CHRONICLE ON JUNE 6, 2017.</ExplanationTxt>
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      <SupplementalInformationDetail>
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        <ExplanationTxt>Presidio Knolls School qualifies for Preschool For All / Headstart / First Five funds which covers a portion of the tuition of children enrolled in the 4 year old program, and some 3 year old programs, depending on birth date. The family must be resident in San Francisco.</ExplanationTxt>
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        <ExplanationTxt>Tuition assistance: The School uses a third party provider to monitor who should receive assistance. the award is applied to each receipients tuition balance. tuition remission: tuition remission is offered to employees and applied to each receipients tuition balance. tuition credits: the School receives Preschool For All funds which covers a portion of the tuition of children enrolled in the 4 year old program, and some 3 year old programs, depending on birth date, for families resident in San Francisco.</ExplanationTxt>
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      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>0</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>0</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>0</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>0</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>0</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>0</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Lee Ann Drolet</PersonNm>
        <TitleTxt>Head of School to Feb 17</TitleTxt>
        <BaseCompensationFilingOrgAmt>286580</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>9232</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>295812</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
    </IRS990ScheduleJ>
    <IRS990ScheduleK documentId="RetDoc1053100001">
      <TaxExemptBondsIssuesGrp>
        <BondReferenceCd>A</BondReferenceCd>
        <IssuerName>
          <BusinessNameLine1Txt>ABAG Finance Authority for Nonprofit Corporations</BusinessNameLine1Txt>
        </IssuerName>
        <BondIssuerEIN>943130123</BondIssuerEIN>
        <BondIssuedDt>2015-01-27</BondIssuedDt>
        <IssuePriceAmt>13100000</IssuePriceAmt>
        <PurposeDesc>See Below</PurposeDesc>
        <DefeasedInd>0</DefeasedInd>
        <OnBehalfOfIssuerInd>0</OnBehalfOfIssuerInd>
        <PoolFinancingInd>0</PoolFinancingInd>
      </TaxExemptBondsIssuesGrp>
      <TaxExemptBondsIssuesGrp>
        <BondReferenceCd>B</BondReferenceCd>
        <IssuerName>
          <BusinessNameLine1Txt>ABAG Finance Authority for Nonprofit Corporations</BusinessNameLine1Txt>
        </IssuerName>
        <BondIssuerEIN>943130123</BondIssuerEIN>
        <BondIssuedDt>2016-11-09</BondIssuedDt>
        <IssuePriceAmt>4915000</IssuePriceAmt>
        <PurposeDesc>See Below</PurposeDesc>
        <DefeasedInd>0</DefeasedInd>
        <OnBehalfOfIssuerInd>0</OnBehalfOfIssuerInd>
        <PoolFinancingInd>0</PoolFinancingInd>
      </TaxExemptBondsIssuesGrp>
      <TaxExemptBondsProceedsGrp>
        <BondReferenceCd>A</BondReferenceCd>
        <RetiredAmt>349648</RetiredAmt>
        <TotalProceedsAmt>13100000</TotalProceedsAmt>
        <IssuanceCostsFromProceedsAmt>250000</IssuanceCostsFromProceedsAmt>
        <CapitalExpendituresAmt>12850000</CapitalExpendituresAmt>
        <SubstantialCompletionYr>2016</SubstantialCompletionYr>
        <CurrentRefundingInd>0</CurrentRefundingInd>
        <AdvanceRefundingInd>0</AdvanceRefundingInd>
        <FinalAllocationMadeInd>1</FinalAllocationMadeInd>
        <AdequateBooksAndRecMaintInd>1</AdequateBooksAndRecMaintInd>
      </TaxExemptBondsProceedsGrp>
      <TaxExemptBondsProceedsGrp>
        <BondReferenceCd>B</BondReferenceCd>
        <RetiredAmt>62998</RetiredAmt>
        <TotalProceedsAmt>2341768</TotalProceedsAmt>
        <IssuanceCostsFromProceedsAmt>8248</IssuanceCostsFromProceedsAmt>
        <CapitalExpendituresAmt>394704</CapitalExpendituresAmt>
        <OtherSpentProceedsAmt>1938816</OtherSpentProceedsAmt>
        <CurrentRefundingInd>1</CurrentRefundingInd>
        <AdvanceRefundingInd>0</AdvanceRefundingInd>
        <FinalAllocationMadeInd>0</FinalAllocationMadeInd>
        <AdequateBooksAndRecMaintInd>1</AdequateBooksAndRecMaintInd>
      </TaxExemptBondsProceedsGrp>
      <TaxExemptBondsPrivateBusUseGrp>
        <BondReferenceCd>A</BondReferenceCd>
        <OwningBondFinancedPropertyInd>0</OwningBondFinancedPropertyInd>
        <AnyLeaseArrangementsInd>0</AnyLeaseArrangementsInd>
        <MgmtContractBondFincdPropInd>0</MgmtContractBondFincdPropInd>
        <AnyResearchAgreementsInd>0</AnyResearchAgreementsInd>
        <BondIssMeetPrvtSecPymtTestInd>0</BondIssMeetPrvtSecPymtTestInd>
        <ChangeInUseBondFinancedPropInd>0</ChangeInUseBondFinancedPropInd>
        <ProcsNonqualifiedBondRemdtdInd>1</ProcsNonqualifiedBondRemdtdInd>
      </TaxExemptBondsPrivateBusUseGrp>
      <TaxExemptBondsPrivateBusUseGrp>
        <BondReferenceCd>B</BondReferenceCd>
        <OwningBondFinancedPropertyInd>0</OwningBondFinancedPropertyInd>
        <AnyLeaseArrangementsInd>0</AnyLeaseArrangementsInd>
        <MgmtContractBondFincdPropInd>0</MgmtContractBondFincdPropInd>
        <AnyResearchAgreementsInd>0</AnyResearchAgreementsInd>
        <BondIssMeetPrvtSecPymtTestInd>0</BondIssMeetPrvtSecPymtTestInd>
        <ChangeInUseBondFinancedPropInd>0</ChangeInUseBondFinancedPropInd>
        <ProcsNonqualifiedBondRemdtdInd>1</ProcsNonqualifiedBondRemdtdInd>
      </TaxExemptBondsPrivateBusUseGrp>
      <TaxExemptBondsArbitrageGrp>
        <BondReferenceCd>A</BondReferenceCd>
        <Form8038TFiledInd>0</Form8038TFiledInd>
        <RebateNotDueYetInd>0</RebateNotDueYetInd>
        <ExceptionToRebateInd>0</ExceptionToRebateInd>
        <NoRebateDueInd>1</NoRebateDueInd>
        <VariableRateIssueInd>1</VariableRateIssueInd>
        <HedgeIdentifiedInBksAndRecInd>1</HedgeIdentifiedInBksAndRecInd>
        <HedgeProviderName>
          <BusinessNameLine1Txt>Compass Bank</BusinessNameLine1Txt>
        </HedgeProviderName>
        <TermOfHedgePct>5.000000000000</TermOfHedgePct>
        <SuperintegratedHedgeInd>0</SuperintegratedHedgeInd>
        <HedgeTerminatedInd>0</HedgeTerminatedInd>
        <GrossProceedsInvestedInGICInd>0</GrossProceedsInvestedInGICInd>
        <GrossProceedsInvestedInd>0</GrossProceedsInvestedInd>
        <WrittenProcToMonitorReqsInd>1</WrittenProcToMonitorReqsInd>
      </TaxExemptBondsArbitrageGrp>
      <TaxExemptBondsArbitrageGrp>
        <BondReferenceCd>B</BondReferenceCd>
        <Form8038TFiledInd>0</Form8038TFiledInd>
        <RebateNotDueYetInd>0</RebateNotDueYetInd>
        <ExceptionToRebateInd>0</ExceptionToRebateInd>
        <NoRebateDueInd>1</NoRebateDueInd>
        <VariableRateIssueInd>1</VariableRateIssueInd>
        <HedgeIdentifiedInBksAndRecInd>1</HedgeIdentifiedInBksAndRecInd>
        <HedgeProviderName>
          <BusinessNameLine1Txt>Compass Bank</BusinessNameLine1Txt>
        </HedgeProviderName>
        <TermOfHedgePct>4.400000000000</TermOfHedgePct>
        <SuperintegratedHedgeInd>0</SuperintegratedHedgeInd>
        <HedgeTerminatedInd>0</HedgeTerminatedInd>
        <GrossProceedsInvestedInGICInd>0</GrossProceedsInvestedInGICInd>
        <GrossProceedsInvestedInd>0</GrossProceedsInvestedInd>
        <WrittenProcToMonitorReqsInd>1</WrittenProcToMonitorReqsInd>
      </TaxExemptBondsArbitrageGrp>
      <ProceduresCorrectiveActionGrp>
        <BondReferenceCd>A</BondReferenceCd>
        <ProceduresCorrectiveActionInd>1</ProceduresCorrectiveActionInd>
      </ProceduresCorrectiveActionGrp>
      <ProceduresCorrectiveActionGrp>
        <BondReferenceCd>B</BondReferenceCd>
        <ProceduresCorrectiveActionInd>1</ProceduresCorrectiveActionInd>
      </ProceduresCorrectiveActionGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule K, Part 1, line A, description of purpose:</FormAndLineReferenceDesc>
        <ExplanationTxt>To assist in the acquisition of the School's campus in addition to paying costs of issuance.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule K, Part 1, line B, description of purpose:</FormAndLineReferenceDesc>
        <ExplanationTxt>To assist in paying off a portion of senior loans, the costs of issuance and campus improvements.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleK>
    <IRS990ScheduleL documentId="RetDoc1042800001">
      <GrntAsstBnftInterestedPrsnGrp>
        <CashGrantAmt>103079</CashGrantAmt>
        <TypeOfAssistanceTxt>Tuition remission</TypeOfAssistanceTxt>
        <AssistancePurposeTxt>discounted tuition</AssistancePurposeTxt>
      </GrntAsstBnftInterestedPrsnGrp>
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <BusinessName>
            <BusinessNameLine1Txt>Friends of PKS LLC</BusinessNameLine1Txt>
          </BusinessName>
        </NameOfInterested>
        <RelationshipDescriptionTxt>See Below</RelationshipDescriptionTxt>
        <TransactionAmt>3500000</TransactionAmt>
        <TransactionDesc>See Below</TransactionDesc>
        <SharingOfRevenuesInd>0</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule L, Part IV, relationship between interested person and the org:</FormAndLineReferenceDesc>
        <ExplanationTxt>The members of Friends of PKS, LLC are either school trustees or a spouse of a trustee: Jeremy Liew, Ranee Lan, Melody Meckfessel, Laura B. Nadler, David Nadler, Kurt Menning, Kevin S. Wong, Leo K. Ma, and Lanier Coles. Effective January 1, 2017, Dave Lessing's interest was purchased by other members of Friends of PKS, LLC.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule L, Part IV, Description of Transaction:</FormAndLineReferenceDesc>
        <ExplanationTxt>On 1/27/15, the School entered into a loan agreement with the ABAG Finance Authority for Nonprofit Corporations (the Authority) for the issuance of up to $3,500,000 ABAG Finance Authority for Nonprofit Corporations 2015 Tax-Exempt Subordinate Loan (Presidio Knolls School) pursuant to a subordinate loan agreement between Friends of PKS, LLC, the Authority and the School. The loan was used to assist in purchasing the campus. These funds are included in the issue price of $13.1 million on Schedule K.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleL>
    <IRS990ScheduleM documentId="RetDoc1042900001">
      <SecuritiesPubliclyTradedGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>12</ContributionCnt>
        <NoncashContributionsRptF990Amt>168919</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </SecuritiesPubliclyTradedGrp>
      <Form8283ReceivedCnt>0</Form8283ReceivedCnt>
      <AnyPropertyThatMustBeHeldInd>0</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>1</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>0</ThirdPartiesUsedInd>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, line 3</FormAndLineReferenceDesc>
        <ExplanationTxt>The school added 4th grade in 2016/17. Additional grades will be added each subsequent year until 8th grade.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>trustees Jeremy Liew and Ranee Lan are married. The members of Friends of PKS, LLC (see Schedule L) are either school trustees or a spouse of a trustee.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>The Board Executive Committee, Board Finance Committee and Board Fundraising/Development Committee review the tax return prior to filing. The Board Finance Committee approves the final tax return prior to filing. After filing, the public disclosure copy is shared with all committee members.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>The conflict of interest covers board members, officers and key employees who are required to annually disclose any potential conflicts. Disclosures are collected and reviewed by the Corporate Secretary and Controller. Potential conflict will be reported to the COO and the Executive Committee will decide if any additional action is necessary.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 15</FormAndLineReferenceDesc>
        <ExplanationTxt>EXECUTIVE SALARY IS DETERMINED BASED ON A COMPARABILITY STUDY AND VOTED ON BY THE BOARD. OTHER OFFICERS SALARIES ARE DETERMINED BASED ON ANNUAL BUDGET AND VOTED ON BY THE BOARD. A COMPARATIVE STUDY IS PERFORMED AND DATA FROM THE CAL-ISBOA SALARY SURVEY ARE USED TO DETERMINE THE SALARIES FOR THE BUDGET.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>upon request</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, line 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>unrealized gain on interest rate swap 247,018. Loss from Uncollectible Promise to Give -2,279,107.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XII, Line 2c:</FormAndLineReferenceDesc>
        <ExplanationTxt>This process has not changed from the prior year.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>