| Sunnyvale Choir Booster ClubSunnyvale | Form 990-EZ | $48,383FY2025 |
| PTA Texas CongressAllen | Form 990-EZ | $48,088FY2026 |
| Parent Booster USA IncAnna | Form 990-EZ | $48,038FY2025 |
| Cisd Educational Support Groups IncThe Woodlands | Form 990-EZ | $47,927FY2026 |
| Vista Ridge High School Choir Booster ClubCedar Park | Form 990-N | No figure |
| Choir-Parent Booster ClubArlington | Form 990-EZ | $47,736FY2026 |
| Parent Booster USA IncMidland | Form 990-EZ | $47,626FY2026 |
| C A T C H FoundationHouston | Form 990-N | No figure |
| Williamson County a&M Foundation IncGeorgetown | Form 990-EZ | $47,586FY2024 |
| Hamshire-Fannett Education FoundationHamshire | Form 990-EZ | $47,572FY2025 |
| Redwater Independent School District Education Foundation IncRedwater | Form 990-EZ | $47,566FY2025 |
| FHS Theatre Booster ClubForney | Form 990-N | No figure |
| Parent Booster USA IncPflugerville | Form 990-EZ | $47,436FY2025 |
| Hes Falcons PTOHuffman | Form 990-EZ | $47,416FY2026 |
| Texas Association of Vocational Nurse EducatorsLubbock | Form 990-EZ | $47,382FY2025 |
| Parent Booster USA IncHallsville | Form 990-EZ | $47,332FY2025 |
| Parent Booster USA IncMagnolia | Form 990-EZ | $47,131FY2026 |
| Tyler Sanders Foundation for Young FilmmakersHouston | Form 990-N | No figure |
| Parent Booster USA IncScurry | Form 990-EZ | $46,845FY2026 |
| Ehs Baseball Booster Club IncEnnis | Form 990-EZ | $46,766FY2025 |
| Stratford High School Class of 2028 Project PromHouston | Form 990-EZ | $46,762FY2025 |
| NitroaaFrisco | Form 990-N | No figure |
| Town Center Elementary Parent Teacher OrganizationCoppell | Form 990-EZ | $46,589FY2025 |
| Goldthwaite Booster ClubGoldthwaite | Form 990-N | No figure |
| Medina County a&M ClubHondo | Form 990-EZ | $46,176FY2024 |
| Parent Booster USA IncBullard | Form 990-EZ | $46,043FY2026 |
| PTA Texas CongressMcKinney | Form 990-EZ | $46,029FY2026 |
| First Colony Middle School Parents Active with School Parent TeacherSugar Land | Form 990-EZ | $46,021FY2026 |
| Parent Booster USA IncFort Worth | Form 990-EZ | $45,978FY2026 |
| Braswell Bravo Booster ClubAubrey | Form 990-EZ | $45,925FY2025 |
| Jasper Band BoostersPlano | Form 990-EZ | $45,773FY2026 |
| Midstream America Scholarship FundSan Antonio | Form 990 | $45,770FY2024 |
| Nottingham Forest Dads ClubHouston | Form 990-N | No figure |
| Clearcreek I S D Support GroupsHouston | Form 990-EZ | $45,749FY2025 |
| Cedar Ridge High School Royalty Booster ClubRound Rock | Form 990-EZ | $45,644FY2025 |
| Plano Senior High School Softball Booster ClubPlano | Form 990-EZ | $45,643FY2025 |
| San Antonio Hispanic Police Officers Org Scholarship FoundatioSan Antonio | Form 990-N | No figure |
| Ibex Club IncDallas | Form 990-EZ | $45,569FY2024 |
| G-P Wildcat Band Boosters IncPortland | Form 990-EZ | $45,537FY2026 |
| Judy Rucker Elementary PTOProsper | Form 990-N | No figure |
| Alumni Foundation-Houston Dental BranchHouston | Form 990-N | No figure |
| Women Communicators of AustinAustin | Form 990-EZ | $45,373FY2025 |
| Little Cypress Mauriceville Education FoundationOrange | Form 990-EZ | $45,334FY2024 |
| Parent Booster USA IncAustin | Form 990-N | No figure |
| Kappa Alpha Theta Dallas Aulnnae FoundationDallas | Form 990-N | No figure |
| PTA Texas CongressCorinth | Form 990-EZ | $45,289FY2026 |
| Barbers Hill Athletic Boosters Club IncMont Belvieu | Form 990-EZ | $45,207FY2025 |
| San Jacinto County Go Texan IncShepherd | Form 990-EZ | $45,154FY2024 |
| Southlake Carroll Alumni Association IncGrapevine | Form 990-EZ | $45,123FY2024 |
| Bolivar Peninsula Golf Cart Poker Run IncMagnolia | Form 990-EZ | $45,122FY2024 |