| Clara Barton Elementary PTSATacoma | Form 990-EZ | $198,590FY2025 |
| Mercer Island High School Football Booster ClubMercer Island | Form 990 | $197,836FY2024 |
| Pullman Education Foundation for Excellence in Pullman Public SCH DPullman | Form 990 | $197,141FY2025 |
| Sunset Elementary PTA Bellevue Council 2 3 95Bellevue | Form 990 | $196,896FY2025 |
| Auburn Mountainview Booster ClubAuburn | Form 990 | $196,463FY2025 |
| FS Educational SupportRedmond | Form 990-EZ | $196,295FY2025 |
| Discovery Lab of EllensburgEllensburg | Form 990-EZ | $195,917FY2024 |
| Battle Ground Education FoundationBattle Ground | Form 990 | $195,589FY2025 |
| Hamilton Middle School PTSA Seattle CouncilTacoma | Form 990-EZ | $195,555FY2025 |
| Fife High School Scholarship FoundationMilton | Form 990 | $194,811FY2024 |
| Friends of the Manchester LibraryManchester | Form 990 | $193,773FY2025 |
| Lakewood Sports Booster ClubNorth Lakewood | Form 990 | $193,270FY2025 |
| Adna Booster Club C/O David DaviesAdna | Form 990-EZ | $192,817FY2024 |
| Laconner Library FoundationLa Conner | Form 990 | $190,986FY2025 |
| Mountain View Thunder Athletic FoundationVancouver | Form 990-EZ | $190,040FY2024 |
| Society for the Advancement of Biology Education ResearchSpokane | Form 990-EZ | $189,221FY2024 |
| North Beach Elementary PTA Seattle Council 6 15 255Seattle | Form 990 | $188,818FY2025 |
| South of the Sound Community Farm Land TrustOlympia | Form 990 | $188,533FY2025 |
| Puget Sound Voyaging SocietyChimacum | Form 990-EZ | $187,395FY2025 |
| Legacy Homeschool CenterBellevue | Form 990-EZ | $184,945FY2025 |
| Seattle Nativity School Endowment FundSeattle | Form 990 | $184,216FY2025 |
| Parent Booster USA IncMaple Valley | Form 990-EZ | $184,184FY2025 |
| Raymond Schools FoundationRaymond | Form 990 | $182,859FY2024 |
| Asotin County Library FoundationClarkston | Form 990-EZ | $180,407FY2024 |
| Sequim Education FoundationSequim | Form 990 | $180,148FY2025 |
| Discovery LeadershipMonroe | Form 990-EZ | $178,998FY2024 |
| Salish CurrentBellingham | Form 990-EZ | $178,640FY2024 |
| Team WRKFircrest | Form 990-EZ | $178,476FY2025 |
| Education with Purpose Foundation for Pacific IslandersKent | Form 990-EZ | $178,087FY2024 |
| Northwest Family Development CenterSeattle | Form 990-EZ | $178,074FY2025 |
| Peter Kirk Elementary PTSAKirkland | Form 990-EZ | $178,060FY2025 |
| Washington Association of Agricultural EducatorsStanwood | Form 990-EZ | $178,004FY2025 |
| Edmonds Heights K12 Parent Teacher Student OrgainzationEdmonds | Form 990-EZ | $176,956FY2025 |
| Kennewick Kiwanis FoundationKennewick | Form 990 | $176,306FY2025 |
| Cleveland High School Alumni AssocSeattle | Form 990-EZ | $174,653FY2024 |
| Laura Ingalls Wilder Elementary Parent Teacher Student Assn 2-8-66Tacoma | Form 990-EZ | $173,253FY2025 |
| Fidalgo Nature SchoolAnacortes | Form 990-EZ | $172,779FY2024 |
| Psesd Learning Communities FoundationSeattle | Form 990-EZ | $172,733FY2025 |
| Falis Community ServiceKent | Form 990-EZ | $172,244FY2025 |
| Stevens PTA 6 15 327Seattle | Form 990-EZ | $172,123FY2025 |
| Gorge MakerspaceWhite Salmon | Form 990-EZ | $171,705FY2024 |
| Spokane Scholars FoundationSpokane | Form 990-EZ | $171,532FY2025 |
| Rachel Carson Elem PTSASammamish | Form 990-EZ | $171,009FY2025 |
| Lake Chelan Valley Scholarship FundChelan | Form 990 | $170,546FY2025 |
| Whatcom County Library FoundationBellingham | Form 990-EZ | $170,424FY2025 |
| SBP Non-ProfitSnohomish | Form 990-EZ | $169,278FY2025 |
| Ben Rush PTATacoma | Form 990-EZ | $169,215FY2025 |
| Meadowbrook Community CareSeattle | Form 990-EZ | $168,882FY2025 |
| Liberty Community EducationfoundationSpangle | Form 990 | $168,833FY2025 |
| Roots of South SudanSeattle | Form 990-EZ | $167,899FY2025 |