| Murray School Parent Faculty ClubDublin | Form 990-N | No figure |
| Major Lucas Gruenther Legacy FoundationTuolumne | Form 990-EZ | $41,513FY2025 |
| Parent Booster USA IncValencia | Form 990-N | No figure |
| Mark Twain Badger BoostersAngels Camp | Form 990-EZ | $41,471FY2023 |
| Monterey High School Instrumental Music BoostersMonterey | Form 990-EZ | $41,429FY2025 |
| Little Owl Foundation for Childhood Education IncLong Beach | Form 990-N | No figure |
| Parent Booster USA IncMadera | Form 990-EZ | $41,370FY2026 |
| Stone Lake Elementary School Parent Teacher OrganizationElk Grove | Form 990-EZ | $41,344FY2025 |
| Cloverland Parent-Teacher ClubOakdale | Form 990-EZ | $41,288FY2026 |
| Start Out Smart - ReadSan Bernardino | Form 990-N | No figure |
| MHS Green Machine Football BoostersMonterey | Form 990-EZ | $41,131FY2025 |
| Grover Beach Elementary School Parent Teacher OrganizationGrover Beach | Form 990-N | No figure |
| Larkspur Library Endowment Fund and FoundationLarkspur | Form 990 | $41,031FY2024 |
| Institute for Rural Education and Development USASacramento | Form 990-N | No figure |
| Cottwood Community LibraryCottonwood | Form 990-N | No figure |
| CDM Wrestling BoostersNewport Beach | Form 990-N | No figure |
| College of the WestLos Angeles | Form 990-N | No figure |
| Corps Publications IncWalnut Creek | Form 990-N | No figure |
| Parent Booster USA IncMcArthur | Form 990-EZ | $40,875FY2026 |
| Rotary Club of Nipomo Foundation IncNipomo | Form 990-EZ | $40,795FY2025 |
| Parent Booster USA IncHoltville | Form 990-EZ | $40,772FY2025 |
| Linda Elementary School Parent Teacher ClubMarysville | Form 990-EZ | $40,731FY2025 |
| Oceanside Perspective IncDiamond Bar | Form 990-N | No figure |
| Auburn Chamber of Commerce Foundation IncAuburn | Form 990-N | No figure |
| Nelson Parents ClubFresno | Form 990-EZ | $40,693FY2025 |
| Mark Keppel High School AllianceAlhambra | Form 990-EZ | $40,635FY2025 |
| Diablo Black Mens GroupSan Ramon | Form 990-EZ | $40,625FY2025 |
| Third Baptist Foundation Inc - TbfiSan Francisco | Form 990-N | No figure |
| Tam District Alternative Schools FoundationLarkspur | Form 990-N | No figure |
| St Michaels Foundation for Elementary Education in the CenterSan Diego | Form 990-N | No figure |
| Sawan Singh and Surjit Kaur Gogia Education FoundationSan Jose | Form 990-N | No figure |
| Regional Analysis and Planning Services IncMonterey | Form 990-N | No figure |
| Parent Booster USA IncSanger | Form 990-N | No figure |
| Hughson Elementary Parent Teacher ClubHughson | Form 990-EZ | $40,279FY2026 |
| Liberty Elementary PTOOntario | Form 990-EZ | $40,240FY2025 |
| Morro Bay High School Music BoostersMorro Bay | Form 990-EZ | $40,236FY2026 |
| Kingsburg High Ag Boosters IncKingsburg | Form 990-EZ | $40,175FY2024 |
| North Torrance Youth Musicians EnsembleTorrance | Form 990-N | No figure |
| Michelson Parents ClubMurphys | Form 990-EZ | $40,090FY2025 |
| Books and Wings Foundation of GuatemalaRedwood City | Form 990-N | No figure |
| Catheryn Gates Parent Teacher ClubRoseville | Form 990-EZ | $39,960FY2025 |
| Friends of Walton Booster ClubStockton | Form 990-EZ | $39,949FY2026 |
| Glendale Hispanic Business & Professional AssociationGlendale | Form 990-EZ | $39,927FY2025 |
| Carpinteria Community AssociationCarpinteria | Form 990-EZ | $39,921FY2025 |
| Stanford Business School Alumni AssociationStanford | Form 990-N | No figure |
| Partners in Oakland EducationBerkeley | Form 990-N | No figure |
| Hillcrest Baseball BoostersRiverside | Form 990-N | No figure |
| California InsiderIrvine | Form 990-N | No figure |
| Vista High School Regimental Band Booster IncVista | Form 990-EZ | $39,625FY2025 |
| Birren Center for Autobiographical StudiesSacramento | Form 990-N | No figure |