| Sea-King District of the Washington Interscholastic Activities AssnBellevue | Form 990 | $462,852FY2025 |
| Life Enrichment OptionsIssaquah | Form 990 | $459,409FY2024 |
| The Reading FoundationLacey | Form 990 | $452,287FY2024 |
| Education Francaise Greater SeattleSeattle | Form 990 | $449,779FY2025 |
| FuturesnwBellingham | Form 990 | $444,632FY2024 |
| Cascadia PTASeattle | Form 990 | $437,304FY2025 |
| Seahawk Athletic Booster AssociationAnacortes | Form 990 | $435,734FY2025 |
| Pma Education FundSeattle | Form 990 | $434,727FY2025 |
| Right Arm Community Development ServicesLakewood | Form 990 | $431,490FY2024 |
| Skyview High School Booster ClubVancouver | Form 990 | $428,120FY2025 |
| Getting Smart CollectiveFederal Way | Form 990 | $427,515FY2025 |
| Inspirational WorkshopsTacoma | Form 990 | $426,192FY2024 |
| Roots of InclusionRedmond | Form 990 | $424,798FY2024 |
| Civic Education Washington StateRenton | Form 990 | $422,919FY2025 |
| Ai Safety Awareness Project IncSeattle | Form 990 | $421,793FY2025 |
| Washington Association of Land TrustsSeattle | Form 990 | $421,370FY2024 |
| Hazen Booster ClubRenton | Form 990 | $417,285FY2025 |
| McDonald Elementary PTASeattle | Form 990 | $417,176FY2025 |
| Seattle Scottish Highland Games Assn IncSeattle | Form 990 | $416,738FY2024 |
| Family Learning Organization ofMead | Form 990 | $414,935FY2025 |
| Lake Washington High School Booster ClubKirkland | Form 990 | $414,732FY2025 |
| Pacific Northwest Association for College Admission CounselingMill Creek | Form 990 | $412,712FY2025 |
| Hope Learning CenterBattle Ground | Form 990 | $412,085FY2025 |
| Purple and Gold Club of Lakestevens High School NFPLake Stevens | Form 990 | $411,204FY2024 |
| Meadowdale Sports Booster ClubLynnwood | Form 990 | $410,771FY2026 |
| Centralia Christian School FoundationCentralia | Form 990 | $410,491FY2025 |
| 206 UniversalSeattle | Form 990 | $408,562FY2024 |
| Your Money MattersAuburn | Form 990 | $408,302FY2025 |
| New Life International Foundation for ChildrenBuckley | Form 990 | $405,567FY2025 |
| A Sacred PassingSeattle | Form 990 | $404,785FY2025 |
| Lopez Island Education FoundationLopez Island | Form 990 | $403,782FY2025 |
| National Council for Private School AccreditationSeattle | Form 990 | $401,640FY2025 |
| The Montesano Boosters AssociationMontesano | Form 990 | $401,428FY2024 |
| Prosser Community Involvment and ActionProsser | Form 990 | $399,347FY2024 |
| Washington State Elks Association Charitable TrustTacoma | Form 990 | $397,091FY2025 |
| Roosevelt High School FoundationSeattle | Form 990 | $394,158FY2025 |
| The Legacy InstituteKenmore | Form 990 | $394,152FY2025 |
| Peninsula High School Volunteer Parent OrganizationGig Harbor | Form 990 | $392,513FY2025 |
| Jaguar Booster ClubBothell | Form 990 | $391,650FY2025 |
| Vermilion Sea InstituteSeattle | Form 990 | $388,248FY2024 |
| University Christian Union Alumni AssociationShoreline | Form 990 | $388,022FY2024 |
| Read NorthwestBrush Prairie | Form 990 | $387,405FY2025 |
| Philosophy Learning and Teaching OrganizationSeattle | Form 990 | $387,299FY2025 |
| Washington Coalition for Police AccountabilitySeattle | Form 990 | $385,521FY2024 |
| Green & Gold Booster ClubMarysville | Form 990 | $382,937FY2025 |
| Partners for Schools InternationalLynden | Form 990 | $382,460FY2024 |
| Garfield High School PTSA-PieSeattle | Form 990 | $382,214FY2025 |
| Washington Potato FoundationMoses Lake | Form 990 | $377,968FY2024 |
| Customized Education Designs LLCYakima | Form 990 | $377,965FY2025 |
| Praxis Institute for Early Childhood EducationSeattle | Form 990 | $374,100FY2025 |