| La Petite Academy - Fairview | Fairview | PreK-K | 9 | 9 | Nonsectarian |
| 8th Street Academy | Gresham | PreK-7 | 174 | 11.5 | Christian (nondenominational) |
| Morningstar Montessori House of Children | Gresham | K-Transitional K | 20 | 6.7 | Nonsectarian |
| Portland Adventist Elementary School | Gresham | PreK-8 | 292 | 17.2 | Seventh-Day Adventist |
| Sonshine Express Preschool | Lake Oswego | PreK-K | 13 | 6.5 | Christian (nondenominational) |
| Activate School | Portland | 3-5 | 18 | 9 | Nonsectarian |
| Bridges Middle School | Portland | 4-8 | 60 | 9.2 | Nonsectarian |
| Cedarwood Waldorf School | Portland | PreK-8 | 215 | 11.3 | Nonsectarian |
| Central Catholic High School | Portland | 9-12 | 865 | 14.9 | Roman Catholic |
| Chestnut Grove Montessori Childrens House | Portland | PreK-K | 3 | 3 | Nonsectarian |
| Childpeace Montessori School | Portland | PreK-8 | 186 | 7.8 | Nonsectarian |
| Class Academy | Portland | PreK-5 | 120 | 9.5 | Nonsectarian |
| Columbia Christian Schools | Portland | PreK-12 | 322 | 12.6 | Church of Christ |
| Community Transitional School | Portland | PreK-8 | 76 | not reported | Nonsectarian |
| De la Salle North Catholic High School | Portland | 9-12 | 220 | 12.2 | Roman Catholic |
| Franciscan Montessori Earth School | Portland | PreK-8 | 228 | 15.6 | Roman Catholic |
| Grace Lutheran School | Portland | PreK-8 | 83 | 16.6 | Wisconsin Evangelical Lutheran Synod |
| Happy Day Christian Child Care | Portland | PreK-K | 7 | 3.5 | Christian (nondenominational) |
| Harmony Montessori School | Portland | PreK-K | 7 | not reported | Nonsectarian |
| Holy Cross Catholic School | Portland | PreK-8 | 215 | 14.4 | Roman Catholic |
| Holy Family School | Portland | PreK-8 | 175 | 16.5 | Roman Catholic |
| Holy Redeemer Catholic School | Portland | PreK-8 | 236 | 15.7 | Roman Catholic |
| International School of Portland | Portland | PreK-5 | 290 | 8.1 | Nonsectarian |
| L'etoile French Immersion School | Portland | K-5 | 84 | 8.6 | Nonsectarian |
| Montessori Childrens House | Portland | PreK-K | 2 | not reported | Nonsectarian |
| Montessori of Alameda | Portland | PreK-K | 4 | not reported | Nonsectarian |
| Parkrose Montessori | Portland | PreK-K | 1 | not reported | Nonsectarian |
| Portland Adventist Academy | Portland | 9-12 | 193 | 13.2 | Seventh-Day Adventist |
| Portland Chinese School | Portland | K-10 | 41 | not reported | Nonsectarian |
| Portland Christian Elementary School | Portland | PreK-5 | 322 | 17.4 | Christian (nondenominational) |
| Portland Christian Schools | Portland | PreK-12 | 628 | 13.7 | Christian (nondenominational) |
| Portland Jewish Academy | Portland | PreK-8 | 169 | 3.8 | Jewish |
| Portland Montessori Collaborative | Portland | PreK-K | 2 | 2 | Nonsectarian |
| Portland Youthbuilders | Portland | 11-12 | 27 | 5.4 | Nonsectarian |
| Puddletown School | Portland | PreK-8 | 66 | 9.4 | Nonsectarian |
| Rosemary Anderson High School/Portland Oic | Portland | 6-12 | 326 | 13.6 | Nonsectarian |
| Rosemary Anderson Middle School | Portland | 6-8 | 31 | 10.3 | Nonsectarian |
| Serendipity Center | Portland | 2-12 | 67 | 5.2 | Nonsectarian |
| Shining Star Waldorf School | Portland | K-8 | 117 | 9.8 | Nonsectarian |
| St. Agatha Catholic School | Portland | PreK-8 | 138 | 12 | Roman Catholic |
| St. Andrew Nativity School | Portland | 6-8 | 81 | 11.6 | Roman Catholic |
| St. Clare School | Portland | K-8 | 228 | 15.2 | Roman Catholic |
| St. Ignatius School | Portland | PreK-8 | 196 | 14.5 | Roman Catholic |
| St. John Fisher | Portland | PreK-8 | 204 | 9.1 | Roman Catholic |
| St. Marys Academy | Portland | 9-12 | 606 | 12.3 | Roman Catholic, all-girls |
| St. Rose School | Portland | PreK-8 | 194 | 8.5 | Roman Catholic |
| St. Therese Catholic School | Portland | PreK-8 | 195 | 17.7 | Roman Catholic |
| St. Thomas More School | Portland | K-8 | 193 | 11.7 | Roman Catholic |
| Sunnyside Mennonite Montessori School | Portland | K | 11 | 5.5 | Nonsectarian |
| Sunstone Montessori School | Portland | PreK-6 | 85 | 12.1 | Nonsectarian |
| The Madeleine Elementary School | Portland | K-8 | 256 | 17.8 | Roman Catholic |
| The Portland Montessori School | Portland | PreK-4 | 55 | 9.2 | Nonsectarian |
| Trinity Academy | Portland | 6-12 | 126 | 7.2 | Christian (nondenominational) |
| Trinity Lutheran School | Portland | K-8 | 50 | not reported | Lutheran Church (Missouri Synod) |
| Tucker Maxon School | Portland | PreK-5 | 48 | 8.9 | Nonsectarian |
| Village Free School | Portland | K | 62 | 8.9 | Nonsectarian |
| West Hills Christian School | Portland | K-8 | 322 | 12.6 | Christian (nondenominational) |
| West Hills Montessori School-Vermont | Portland | PreK-6 | 103 | 5.2 | Nonsectarian |
| Whole Child Montessori Center | Portland | PreK-K | 10 | 2.3 | Nonsectarian |
| Woodlawn Montessori | Portland | PreK-K | 1 | not reported | Nonsectarian |
| Open Door Christian Academy | Troutdale | PreK-12 | 291 | 19.7 | Baptist |