The PSUA generally services the following high schools in Clackamas, Multnomah, Washington and Yamhill Counties. For specific addresses please see Reftown.
| SCHOOL | CLASSIFI-CATION | FIELDS | LIGHTS | OTHER |
| Aloha | 6A | Varsity (turf) | Yes | Only one field |
| Banks (#1) | 3A | Varsity (grass) | No | |
| Barlow | 6A | Turf | Yes | Only one field |
| Beaverton | 6A | Varsity (grass) | School under construction, limited parking | |
| Benson | 6A | Turf | Plays at Buckman Park | |
| Central Catholic | 6A | Turf | Yes | Plays at old Concordia College |
| Centennial | 5A | Grass | ||
| Century | 6A | Varsity & JV (grass) | No | |
| Clackamas | 6A | |||
| Cleveland | 6A | Grass | Plays at Woodstock Park | |
| Corbett | 3A | Grass | No | |
| David Douglas | 6A | Grass | No | Plays at N. Powellhurst School |
| DeLaSalle North | 2A | No team at this time | ||
| Estacada | 4A | Turf | ||
| Faith Bible | 2A/1A | No team at this time | ||
| Forest Grove (#15) | 6A | Varsity (grass), JV (grass) | No | |
| Franklin | 6A | Grass | No | Plays at Erv Lind Stadium |
| Gladstone | 4A | Varsity (grass) | No | |
| Glencoe | 6A | Varsity & JV (turf) | Varsity yes | |
| Grant | 6A | Turf | Yes | Also plays at Wilshire Park |
| Gresham | 6A | Turf | ||
| Hillsboro | 5A | Grass | No | Also plays at Hillsboro Stadium |
| Hillsboro Stadium | Turf | Yes | ||
| Horizon Christian | 3A | No team at this time | ||
| Jefferson | 6A | No | Yes | Plays at Delta Park |
| Jesuit | 6A | Varsity (turf), JV (turf) | Varsity Yes | |
| Lake Oswego | 6A | Varsity (turf) | Varsity Yes | Plays at Lake Oswego JHS which is under construction, Park at elementary school beyond right field. |
| Lakeridge | 6A | Varsity (turf) | Yes | Only one field |
| La Salle Prep | 5A | Varsity (grass), JV (grass) | No | |
| Liberty | 6A | Grass | Yes | Also plays at Hillsboro Stadium |
| Lincoln | 6A | Grass | Plays at Hamilton Park | |
| McDaniel | 6A | Turf | Yes | Only one field |
| Milwaukie | 5A | Turf | Plays at nearby off-campus complex | |
| Mountainside | 6A | Varsity & JV (turf) | Yes (varsity) | |
| Nelson (Hood View Park) | 6A | Turf | Yes | Multi-field on-campus complex |
| Newberg (#48) | 6A | Varsity (grass), JV (grass) | Varsity yes | |
| Oregon City (#34) | 6A | Varsity (turf), JV (grass) | Yes (both) | |
| Parkrose | 5A | Grass | ||
| Portland Adventist | 3A | Varsity (turf) | Varsity yes | |
| Portland Christian | 2A | Grass | ||
| Putnam | 5A | Turf (infield); Grass (outfield) | No | |
| Reynolds | 6A | Grass | ||
| Riverside/WL | 3A | No team at this time | ||
| Roosevelt | 6A | Grass | No | |
| Sandy (#40) | 6A | Turf (varsity & JV) | Lights (both field) | |
| Scappoose (#50) | 4A | Grass | ||
| Sherwood | 6A | Varsity (turf) JV grass | No | |
| Southridge | 6A | Varsity (turf); JV (grass) | No | |
| St. Helens (#51) | 4A | Varsity (turf) | No | New field located at old baseball field near community center. |
| Sunset | 6A | Varsity (turf) | Varsity yes | |
| Tigard | 6A | Varsity (turf), JV (grass) | No | |
| Tualatin | 6A | Varsity (turf); JV (grass) | No | |
| Valley Catholic | 3A | Grass | No | Only one field |
| Vernonia | 2A | |||
| Ida B. Wells | 6A | Grass | No | Plays at Rieke ES |
| West Linn | 6A | Turf | Yes | Plays at Rosemont Ridge MS |
| Westside Christian | 3A | |||
| Westview | 6A | Grass | No | |
| Wilsonville (#27) | 5A | Varsity and JV turf | Varsity and JV yes |