| National Black Postdoctoral Association IncBoston | Form 990-EZ | $50,533FY2024 |
| Central Parents OrganizationAttleboro | Form 990-EZ | $50,500FY2025 |
| Parker School Parent Teachers OrganizationBillerica | Form 990-EZ | $50,344FY2025 |
| East & Alternative Elementary Schools Parent Teacher OrganizatioSharon | Form 990-EZ | $50,197FY2025 |
| A Irvin Studley Elementary Parent Teacher Organization IncAttleboro | Form 990-EZ | $50,181FY2025 |
| Harvard Union IncBoston | Form 990-EZ | $50,000FY2025 |
| Team Wayland IncWayland | Form 990-EZ | $49,849FY2025 |
| Teamsters Union Local 170 Scholarship FundWorcester | Form 990-EZ | $49,761FY2025 |
| Ivan G Smith Elementary School Parent Advisory CouncilDanvers | Form 990-EZ | $49,761FY2025 |
| Friends of Concord-Carlisle High School Boys Hockey IncConcord | Form 990-N | No figure |
| Westford Academy Student Supporters IncWestford | Form 990-N | No figure |
| Eric Fernandes Memorial Scholarship TrustNew Bedford | Form 990-N | No figure |
| Veterans Lower Elementary School PTOSaugus | Form 990-EZ | $48,864FY2025 |
| MHS 19Marblehead | Form 990-N | No figure |
| Wilkins School Parent Teacher Organization of Stoughton MaStoughton | Form 990-EZ | $48,833FY2025 |
| Mullen Hall Parent Teacher Organization PTOFalmouth | Form 990-EZ | $48,807FY2025 |
| William J Boyle Scholarship IncSpringfield | Form 990-EZ | $48,608FY2024 |
| Boyden Elementary School Parents Advisory CouncilSouth Walpole | Form 990-EZ | $48,445FY2025 |
| Glover Eveleth PTO IncMarblehead | Form 990-EZ | $48,278FY2025 |
| Old Charlestown Schoolboys AssociationCharlestown | Form 990-N | No figure |
| Alumni Turf Group IncTempleton | Form 990-EZ | $48,247FY2025 |
| Bedford Elementary Schools TogetherBedford | Form 990-N | No figure |
| Foxboro Touchdown Club IncFoxboro | Form 990-EZ | $47,992FY2025 |
| Clough Parent Teacher OrganizationMendon | Form 990-EZ | $47,984FY2025 |
| The East Boston Athletic Board IncEast Boston | Form 990-N | No figure |
| Falmouth Public Library Support Fund IncFalmouth | Form 990-N | No figure |
| Mass H O P E IncHolden | Form 990-EZ | $47,692FY2025 |
| Acton Memorial Library Foundation IncActon | Form 990-N | No figure |
| Roberta G Doering Parent Teacher Organization IncAgawam | Form 990-N | No figure |
| North American Anthroposophic Nurses AssociationNorthampton | Form 990-N | No figure |
| PTO-Shoemaker School CorporationLynn | Form 990-N | No figure |
| Horace Mann Elementary School Parent Teacher OrganizationNewtonville | Form 990-EZ | $46,475FY2023 |
| Medway Secondary Home and School Association IncMedway | Form 990-EZ | $46,464FY2025 |
| Wampatuck Parent Teacher Organization IncScituate | Form 990-EZ | $46,417FY2025 |
| Wellesley High School Parent Teacher Student OrganizationWellesley | Form 990-N | No figure |
| Fallbrook School Parent Teacher Organization IncorporatedLeominster | Form 990-EZ | $46,277FY2025 |
| Haynes Organization of Parents IncSudbury | Form 990-N | No figure |
| Frances Drake School PTO IncLeominster | Form 990-EZ | $46,076FY2025 |
| International Conference on Improving University Teaching IncSterling | Form 990-N | No figure |
| Marthas Vineyard Touchdown ClubVineyard Haven | Form 990-EZ | $45,670FY2025 |
| John J Ahern Middle School Parent Advisory CouncilFoxboro | Form 990-EZ | $45,626FY2026 |
| Needham Steps Up IncorporatedNeedham Heights | Form 990-N | No figure |
| Unico Merrimack Valley Foundation IncNorth Andover | Form 990-EZ | $45,490FY2025 |
| Harvard Undergraduate Science OlympiadCambridge | Form 990-N | No figure |
| Wood End Elementary School Parent Teacher Organization IncReading | Form 990-EZ | $45,383FY2025 |
| Jennifer Price Global Education Leadership FundNewton | Form 990-N | No figure |
| Dr Ralph J Froio Scholarship Fund IncCohasset | Form 990-N | No figure |
| Weston Memorial FundEast Sandwich | Form 990 | $45,137FY2024 |
| Kevs Foundation IncWestfield | Form 990 | $45,069FY2025 |
| Sippican Womans ClubMarion | Form 990 | $44,973FY2025 |