| West Tualatin View School Parent-Teacher Club IncPortland | Form 990-EZ | $79,335FY2025 |
| Astor Parent Teacher Student OrganizationPortland | Form 990-EZ | $79,314FY2025 |
| Rotary Club of Tigard Foundation IncTigard | Form 990-EZ | $79,304FY2023 |
| Highland Parent Teacher OrganizationBend | Form 990-EZ | $79,063FY2025 |
| Sato Elementary Community OrganizationPortland | Form 990-EZ | $77,980FY2025 |
| Sherwood High School Grad Night OrganizationSherwood | Form 990-EZ | $77,803FY2025 |
| Oregon Early Learning Hub AssociationSalem | Form 990-EZ | $77,200FY2023 |
| Grant High School Booster Club IncPortland | Form 990-EZ | $77,113FY2026 |
| Forest Hills Elementery School PTO IncLake Oswego | Form 990-EZ | $77,031FY2025 |
| Ariadne Institute for the Study of Myth and Ritual LtdEugene | Form 990-EZ | $76,729FY2022 |
| Santiam Canyon School District Parent Teacher OrganizationMill City | Form 990-EZ | $76,070FY2025 |
| Singing Creek Educational CenterEugene | Form 990-EZ | $75,567FY2025 |
| Westview Wildcat Band & Auxiliary Parents IncPortland | Form 990-EZ | $74,747FY2025 |
| Parkrose Educational FoundationPortland | Form 990-EZ | $74,340FY2026 |
| Forge FoundationBend | Form 990-EZ | $74,281FY2025 |
| Dora Public LibraryMyrtle Point | Form 990-EZ | $74,226FY2025 |
| Orenco Elementary Booster ClubHillsboro | Form 990-EZ | $74,182FY2026 |
| Fern Ridge Library FoundationVeneta | Form 990-EZ | $74,026FY2025 |
| Rex Putnam Mom & Dads ClubMilwaukie | Form 990-EZ | $73,902FY2025 |
| Enlivened CooperativeKlamath Falls | Form 990-EZ | $73,570FY2025 |
| Antonia Crater Parent Teacher Organization PTONewberg | Form 990-EZ | $73,096FY2025 |
| Portland Public Schools Athletic Hall of Fame AssociationPortland | Form 990-EZ | $72,871FY2025 |
| Wallaggaa Adventist AcademyPortland | Form 990-EZ | $72,846FY2025 |
| Sutherlin Booster ClubSutherlin | Form 990-EZ | $71,803FY2025 |
| River Grove Parent Teacher OrganizationLake Oswego | Form 990-EZ | $71,749FY2025 |
| Seashore Family LiteracyWaldport | Form 990-EZ | $71,442FY2023 |
| Tualatin High School Athletic Booster ClubTualatin | Form 990-EZ | $71,405FY2025 |
| South Umpqua School Education Foundation IncMyrtle Creek | Form 990 | $71,333FY2025 |
| Hoi Phu HuynhPortland | Form 990-EZ | $71,294FY2025 |
| PTA Oregon CongressWest Linn | Form 990-EZ | $71,026FY2025 |
| Oregon Trail Elementary PTO IncClackamas | Form 990-EZ | $70,486FY2025 |
| Spiral Living CenterCave Junction | Form 990-EZ | $70,373FY2025 |
| Oregon Space Camp AdventuresSherwood | Form 990-EZ | $69,951FY2024 |
| Oregon Agricultural Chemicals & Fertilizers AssocSalem | Form 990-EZ | $69,638FY2025 |
| Geno Morgan FoundationBeaverton | Form 990-EZ | $69,416FY2025 |
| Tamil Arambap PalliPortland | Form 990-EZ | $69,088FY2025 |
| St Helens Band PatronsSaint Helens | Form 990-EZ | $68,987FY2026 |
| Oregon Assn Student Financial Aid AdminSpringfield | Form 990-EZ | $68,738FY2025 |
| Tea Events PDX IncCorvallis | Form 990-EZ | $68,667FY2025 |
| Suzanne C and Henry L Lennard Institute for Livable Cities IncThe Dalles | Form 990-EZ | $68,573FY2025 |
| Western Association of Graduate SchoolsEugene | Form 990-EZ | $68,469FY2024 |
| Center on Educational AssessmentaccountabilityEugene | Form 990-EZ | $67,493FY2025 |
| Teamsters Joint Council 37 All Charities FundPortland | Form 990-EZ | $67,061FY2025 |
| Lakeridge Junior High School Parent ClubLake Oswego | Form 990-EZ | $66,715FY2025 |
| Parent Booster USA IncBandon | Form 990-EZ | $66,694FY2025 |
| Tangent TogetherTangent | Form 990-EZ | $66,626FY2025 |
| Buena Vista Spanish Immersion School Parent OrganizationEugene | Form 990-EZ | $66,596FY2025 |
| Oak Hills Parent Teacher OrganizationBeaverton | Form 990-EZ | $66,500FY2025 |
| Generation of HopeCoos Bay | Form 990-EZ | $66,096FY2025 |
| Scorpion Creek RanchEugene | Form 990-EZ | $65,560FY2025 |