Civic Intelligence

Wellesley High School Parent Teacher Student Organization

EIN 36-4560257 • 501(c)3 • Wellesley, MA

Pub. 78 Eligible

Profile

The purpose is to support and enhance the educational experiences at wellesley high school and to provide support for programs outside of the school's annual budget by advocating for the education and general well-being of whs students, providing services and financial suppport, enhancing communication between home, school and community groups, and by collaborating with other organizations and agencies in support of the whs community.

50 Rice StreetWellesley, MA 02481

whsptso.org

Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

Liabilities / Assets

60th percentile

0.00x

Tied with the lowest-debt nonprofits in its peer group.

501(c)3 • <$500k nonprofits • Source year 2025

Liabilities / Revenue

62nd percentile

0.00x

Tied with the lowest-debt nonprofits in its peer group.

501(c)3 • <$500k nonprofits • Source year 2025

Net Margin

22nd percentile

-22%

Higher net margin than 22% of similar nonprofits.

501(c)3 • <$500k nonprofits • Source year 2025

Top Officer Pay

81st percentile

$0

Higher top officer pay than 81% of similar nonprofits.

Top officer pay equals 0.0% of source-year revenue.

501(c)3 • <$500k nonprofits • Source year 2025

Asset Growth

36th percentile

-14%

Faster asset growth than 36% of similar nonprofits.

501(c)3 • <$500k nonprofits • Annualized from 2024 to 2025

Revenue Growth

32nd percentile

-22%

Faster revenue growth than 32% of similar nonprofits.

501(c)3 • <$500k nonprofits • Annualized from 2024 to 2025

Assets

Down

$61,578

Down $10,304 (-14%) from 2024

Liabilities

$0

No earlier filing loaded for comparison.

Net Assets

Down

$61,578

Down $10,304 (-14%) from 2024

Revenue

Down

$46,372

Down $12,801 (-22%) from 2024

Expenses

Down

$56,676

Down $12,130 (-18%) from 2024

Net Income

Down

-$10,304

Down $671 (-7.0%) from 2024

Trend Graphs

Balance Sheet Trend

Grouped bars show assets, liabilities, and net assets across loaded filings.

$150K$100K$50K$0Assets 2011: $95,846Liabilities 2011: $0Net Assets 2011: $95,8462011Assets 2012: $61,751Liabilities 2012: $0Net Assets 2012: $61,7512012Assets 2013: $56,385Liabilities 2013: $0Net Assets 2013: $56,3852013Assets 2014: $66,210Liabilities 2014: $0Net Assets 2014: $66,2102014Assets 2015: $80,739Liabilities 2015: $0Net Assets 2015: $80,7392015Assets 2016: $100,278Liabilities 2016: $0Net Assets 2016: $100,2782016Assets 2017: $105,167Liabilities 2017: $0Net Assets 2017: $105,1672017Assets 2018: $121,412Liabilities 2018: $197Net Assets 2018: $121,2152018Assets 2019: $107,788Liabilities 2019: $13,266Net Assets 2019: $94,5222019Assets 2020: $104,067Liabilities 2020: $419Net Assets 2020: $103,6482020Assets 2021: $97,540Liabilities 2021: $435Net Assets 2021: $97,1052021Assets 2022: $81,450Net Assets 2022: $81,4502022Assets 2023: $81,515Net Assets 2023: $81,5152023Assets 2024: $71,882Net Assets 2024: $71,8822024Assets 2025: $61,578Liabilities 2025: $0Net Assets 2025: $61,5782025

Highlighted filing

2025

Assets$61,578
Liabilities$0
Net Assets$61,578

Operations Trend

Revenue, expenses, and net income by year, with the latest filing highlighted.

$150K$100K$50K$0-$50KRevenue 2011: $105,520Expenses 2011: $126,361Net Income 2011: -$20,8412011Revenue 2012: $85,842Expenses 2012: $119,937Net Income 2012: -$34,0952012Revenue 2013: $86,814Expenses 2013: $92,180Net Income 2013: -$5,3662013Revenue 2014: $87,524Expenses 2014: $77,699Net Income 2014: $9,8252014Revenue 2015: $83,264Expenses 2015: $70,537Net Income 2015: $12,7272015Revenue 2016: $74,928Expenses 2016: $55,389Net Income 2016: $19,5392016Revenue 2017: $78,173Expenses 2017: $73,284Net Income 2017: $4,8892017Revenue 2018: $81,239Expenses 2018: $65,191Net Income 2018: $16,0482018Revenue 2019: $90,075Expenses 2019: $116,768Net Income 2019: -$26,6932019Revenue 2020: $89,276Expenses 2020: $80,150Net Income 2020: $9,1262020Revenue 2021: $36,487Expenses 2021: $43,030Net Income 2021: -$6,5432021Revenue 2022: $41,424Expenses 2022: $57,079Net Income 2022: -$15,6552022Revenue 2023: $65,394Expenses 2023: $65,329Net Income 2023: $652023Revenue 2024: $59,173Expenses 2024: $68,806Net Income 2024: -$9,6332024Revenue 2025: $46,372Expenses 2025: $56,676Net Income 2025: -$10,3042025

Highlighted filing

2025

Revenue$46,372
Expenses$56,676
Net Income-$10,304

Filings

Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2025Detailed filing. Detailed filing data is available for this year.$0.62$0.00$0.62$0.46$0.57$0.10
2024Detailed filing. Detailed filing data is available for this year.$0.72$0.72$0.59$0.69$0.10
2023Detailed filing. Detailed filing data is available for this year.$0.82$0.82$0.65$0.65$0.00
2022Detailed filing. Detailed filing data is available for this year.$0.81$0.81$0.41$0.57$0.16
2021Detailed filing. Detailed filing data is available for this year.$0.98$0.00$0.97$0.36$0.43$0.07
2020Detailed filing. Detailed filing data is available for this year.$1.04$0.00$1.04$0.89$0.80$0.09
2019Detailed filing. Detailed filing data is available for this year.$1.08$0.13$0.95$0.90$1.17$0.27
2018Detailed filing. Detailed filing data is available for this year.$1.21$0.00$1.21$0.81$0.65$0.16
2017Detailed filing. Detailed filing data is available for this year.$1.05$0.00$1.05$0.78$0.73$0.05
2016Detailed filing. Detailed filing data is available for this year.$1.00$0.00$1.00$0.75$0.55$0.20
2015Detailed filing. Detailed filing data is available for this year.$0.81$0.00$0.81$0.83$0.71$0.13
2014Detailed filing. Detailed filing data is available for this year.$0.66$0.00$0.66$0.88$0.78$0.10
2013Facts available. Structured filing facts are available, but richer extracted sections are limited.$0.56$0.00$0.56$0.87$0.92$0.05
2012Facts available. Structured filing facts are available, but richer extracted sections are limited.$0.62$0.00$0.62$0.86$1.20$0.34
2011Facts available. Structured filing facts are available, but richer extracted sections are limited.$0.96$0.00$0.96$1.06$1.26$0.21
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Aug 1, 2024 to Jul 31, 2025
Signed
Feb 10, 2026
Return Version
2024v5.5
Gross Receipts
$46,372
Mission and Program Overview

Mission

The purpose is to support and enhance the educational experiences at wellesley high school and to provide support for programs outside of the school's annual budget by advocating for the education and general well-being of whs students, providing services and financial suppport, enhancing communication between home, school and community groups, and by collaborating with other organizations and agencies in support of the whs community.

Program Services

DescriptionGrantsExpenses
GRANTS TO AND EXPENDITURES FOR THE BENEFIT OF WELLESLEY HIGH SCHOOL, WELLESLEY, MA. GRANTS AND EXPENDITURES ARE FOR CLASSROOM SUPPLIES, FACULTY PROFESSIONAL DEVELOPMENT AND TRAINING, TEACHING EQUIPMENT, PARET-TEACHER EVENTS, SCHOOL LANDSCAPING AND FACILITIES, AND CHARITIES THAT PROMOTEO EDUCATION.$0$48,413
Compensation and Service Providers

Employees

NameTitleFull / Part TimeBaseOtherTotal
MELISSA MACKPresidentPT$0--
MEGAN DYERCo-Vice President-$0--
JOELLE REIDYCo-Vice President-$0--
AMANDA TURNERSecretary-$0--
JENNIFER MOCKTreasurerPT$0--
Filing and Contact Details

Filer

Filer Name
Wellesley High School
EIN
36-4560257
Phone
6176201991
Address
50 RICE STREET, WELLESLEY, MA 02481

Signing Officer

Name
Jennifer Mock
Title
Treasurer
Phone
6176201991
Signed
2026-02-10
Discuss with paid preparer
Yes

Preparer

Firm
Grassi Advisory Group Inc
Address
6 OMNI WAY STE 201, CHELMSFORD, MA 01824-4187
Preparer
Mary M Linskey
Phone
9784522500
Supplemental Narrative

Additional Explanations

Form 990-ez, Part I, Line 4 - Other Investment Income

Description: interest income. Amount: 1,122.

Form 990-ez, Part I, Line 16 - Other Expenses

Description: administrative costs. Amount: 2,781. Description: technology. Amount: 648. Description: insurance. Amount: 1,679. Description: program services. Amount: 14,700. Description: faculty enrichment. Amount: 31,595. Description: student program. Amount: 2,118. Total to form 990-ez, line 16: 53,521.

Raw XML Appendix172 raw XML fields

This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.

Path#Value
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IRS990EZ/BooksInCareOfDetail/PhoneNum06176201991
IRS990EZ/BooksInCareOfDetail/USAddress/AddressLine1Txt050 RICE ST
IRS990EZ/BooksInCareOfDetail/USAddress/CityNm0WELLESLEY
IRS990EZ/BooksInCareOfDetail/USAddress/StateAbbreviationCd0MA
IRS990EZ/BooksInCareOfDetail/USAddress/ZIPCd002481
IRS990EZ/CashSavingsAndInvestmentsGrp/BOYAmt071882
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IRS990EZ/NetAssetsOrFundBalancesBOYAmt071882
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IRS990EZ/NetAssetsOrFundBalancesGrp/EOYAmt061578
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IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt12.00
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IRS990EZ/OfficerDirectorTrusteeEmplGrp/AverageHrsPerWkDevotedToPosRt47.00
IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt00
IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt10
IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt20
IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt30
IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt40
IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt00
IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt10
IRS990EZ/OfficerDirectorTrusteeEmplGrp/EmployeeBenefitProgramAmt20
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IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm0MELISSA MACK
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm1MEGAN DYER
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm2JOELLE REIDY
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm3AMANDA TURNER
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm4JENNIFER MOCK
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt0PRESIDENT
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt1CO-VICE PRESIDENT
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt2CO-VICE PRESIDENT
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt3SECRETARY
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt4TREASURER
IRS990EZ/OperateHospitalInd00
IRS990EZ/Organization501c3Ind0X
IRS990EZ/OrganizationDissolvedEtcInd00
IRS990EZ/OrganizationHadUBIInd00
IRS990EZ/OtherChangesInNetAssetsAmt00
IRS990EZ/OtherExpensesTotalAmt053521
IRS990EZ/PartVIHghstPdCntrctProfSrvcTxt0NONE
IRS990EZ/PartVIOfCompOfHghstPdEmplTxt0NONE
IRS990EZ/PoliticalCampaignActyInd00
IRS990EZ/PrimaryExemptPurposeTxt0THE PURPOSE IS TO SUPPORT AND ENHANCE THE EDUCATIONAL EXPERIENCES AT WELLESLEY HIGH SCHOOL AND TO PROVIDE SUPPORT FOR PROGRAMS OUTSIDE OF THE SCHOOL'S ANNUAL BUDGET BY ADVOCATING FOR THE EDUCATION AND GENERAL WELL-BEING OF WHS STUDENTS, PROVIDING SERVICES AND FINANCIAL SUPPPORT, ENHANCING COMMUNICATION BETWEEN HOME, SCHOOL AND COMMUNITY GROUPS, AND BY COLLABORATING WITH OTHER ORGANIZATIONS AND AGENCIES IN SUPPORT OF THE WHS COMMUNITY.
IRS990EZ/PrintingPublicationsPostageAmt01155
IRS990EZ/ProgramSrvcAccomplishmentGrp/DescriptionProgramSrvcAccomTxt0GRANTS TO AND EXPENDITURES FOR THE BENEFIT OF WELLESLEY HIGH SCHOOL, WELLESLEY, MA. GRANTS AND EXPENDITURES ARE FOR CLASSROOM SUPPLIES, FACULTY PROFESSIONAL DEVELOPMENT AND TRAINING, TEACHING EQUIPMENT, PARET-TEACHER EVENTS, SCHOOL LANDSCAPING AND FACILITIES, AND CHARITIES THAT PROMOTEO EDUCATION.
IRS990EZ/ProgramSrvcAccomplishmentGrp/GrantsAndAllocationsAmt00
IRS990EZ/ProgramSrvcAccomplishmentGrp/ProgramServiceExpensesAmt048413
IRS990EZ/ProhibitedTaxShelterTransInd00
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IRS990EZ/SubjectToProxyTaxInd00
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IRS990EZ/TaxImposedUnderIRC4912Amt00
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IRS990EZ/TaxReimbursedByOrganizationAmt00
IRS990EZ/TotalExpensesAmt056676
IRS990EZ/TotalProgramServiceExpensesAmt048413
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IRS990EZ/TrnsfrExmptNonChrtblRltdOrgInd00
IRS990EZ/TypeOfOrganizationAssocInd0X
IRS990EZ/WebsiteAddressTxt0WHSPTSO.ORG
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IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearAmt045250
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus1YearAmt057498
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus2YearsAmt064548
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus3YearsAmt041327
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus4YearsAmt036437
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/TotalAmt0245060
IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearAmt01122
IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus1YearAmt01675
IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus2YearsAmt0846
IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus3YearsAmt097
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IRS990ScheduleA/GrossInvestmentIncome509Grp/TotalAmt03790
IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearAmt01122
IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus1YearAmt01675
IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus2YearsAmt0846
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IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/TotalAmt03790
IRS990ScheduleA/InvestmentIncomeCYPct00.01520
IRS990ScheduleA/InvestmentIncomePYPct00.01000
IRS990ScheduleA/PubliclySupportedOrg509a2Ind0X
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IRS990ScheduleA/PublicSupportTotal509Amt0245060
IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/TotalAmt00
IRS990ScheduleA/SubstantialContributorsAmtGrp/TotalAmt00
IRS990ScheduleA/ThirtyThrPctSuprtTestsCY509Ind0X
IRS990ScheduleA/Total509Grp/CurrentTaxYearAmt045250
IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus1YearAmt057498
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IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus3YearsAmt041327
IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus4YearsAmt036437
IRS990ScheduleA/Total509Grp/TotalAmt0245060
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearAmt046372
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus1YearAmt059173
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus2YearsAmt065394
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus3YearsAmt041424
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus4YearsAmt036487
IRS990ScheduleA/TotalSupportCalendarYearGrp/TotalAmt0248850
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt0DESCRIPTION: INTEREST INCOME. AMOUNT: 1,122.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt1DESCRIPTION: ADMINISTRATIVE COSTS. AMOUNT: 2,781. DESCRIPTION: TECHNOLOGY. AMOUNT: 648. DESCRIPTION: INSURANCE. AMOUNT: 1,679. DESCRIPTION: PROGRAM SERVICES. AMOUNT: 14,700. DESCRIPTION: FACULTY ENRICHMENT. AMOUNT: 31,595. DESCRIPTION: STUDENT PROGRAM. AMOUNT: 2,118. TOTAL TO FORM 990-EZ, LINE 16: 53,521.
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc0FORM 990-EZ, PART I, LINE 4 - OTHER INVESTMENT INCOME
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc1FORM 990-EZ, PART I, LINE 16 - OTHER EXPENSES
TransferPrsnlBnftContractsDecl/DeclarationDesc0THE ORGANIZATION DID NOT, DURING THE YEAR, RECEIVE ANY FUNDS, DIRECTLY,OR INDIRECTLY, TO PAY PREMIUMS ON A PERSONAL BENEFIT CONTRACT.THE ORGANIZATION, DID NOT, DURING THE YEAR, PAY ANY PREMIUMS, DIRECTLY,OR INDIRECTLY, ON A PERSONAL BENEFIT CONTRACT.
ReturnHeader/BuildTS02025-03-06 01:10:19Z
ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd01
ReturnHeader/BusinessOfficerGrp/PersonNm0JENNIFER MOCK
ReturnHeader/BusinessOfficerGrp/PersonTitleTxt0TREASURER
ReturnHeader/BusinessOfficerGrp/PhoneNum06176201991
ReturnHeader/BusinessOfficerGrp/SignatureDt02026-02-10
ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt0WELLESLEY HIGH SCHOOL
ReturnHeader/Filer/BusinessName/BusinessNameLine2Txt0PARENT TEACHER STUDENT ORGANIZATION
ReturnHeader/Filer/BusinessNameControlTxt0WELL
ReturnHeader/Filer/EIN0364560257
ReturnHeader/Filer/PhoneNum06176201991
ReturnHeader/Filer/USAddress/AddressLine1Txt050 RICE STREET
ReturnHeader/Filer/USAddress/CityNm0WELLESLEY
ReturnHeader/Filer/USAddress/StateAbbreviationCd0MA
ReturnHeader/Filer/USAddress/ZIPCd002481
ReturnHeader/IRSResponsiblePrtyInfoCurrInd00
ReturnHeader/PreparerFirmGrp/PreparerFirmEIN0113266576
ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt0GRASSI ADVISORY GROUP INC
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt06 OMNI WAY STE 201
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm0CHELMSFORD
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd0MA
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd0018244187
ReturnHeader/PreparerPersonGrp/PhoneNum09784522500
ReturnHeader/PreparerPersonGrp/PreparationDt02026-02-06
ReturnHeader/PreparerPersonGrp/PreparerPersonNm0MARY M LINSKEY
ReturnHeader/ReturnTs02026-03-26T09:42:26-05:00
ReturnHeader/ReturnTypeCd0990EZ
ReturnHeader/TaxPeriodBeginDt02024-08-01
ReturnHeader/TaxPeriodEndDt02025-07-31
ReturnHeader/TaxYr02024

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