Schools in 91773 — San Dimas, California: 91773 students aren't just reaching proficiency — many go beyond it.
91773 has 9 ranked schools in San Dimas, averaging a Scope Score of 57.1/100 — 16.6 points above the state average of 40.5 (a state average weighted to 91773's own mix of school levels; CDE CAASPP 2025). Scores range from 23.5 to 74.9, a 51.4-point spread. 3 schools rank in the 90th percentile or above statewide.
How 91773 schools perform
The top-ranked school is Ramona Middle with a Scope Score of 75 and 40.7% of students exceeding standard.
Students here are going past the bar, not just to it. Schools here average 35.3% exceeding standard — well above the statewide average of 20.3%, itself weighted to 91773's own level mix.
Cohort growth among 91773's elementary schools — the returning cohort, 2023 G3 → 2025 G5 — averages +73 scale-score points across 6 schools in 91773 with a large enough tested cohort. Scale scores rise with grade for nearly every school, so this describes the cohort's trajectory, not a ranking against other zip codes — worth examining school by school.
Chronic absenteeism across 91773 averages 16.4%, below the state average of 18.5%, weighted to 91773's own level mix. CDE CAASPP 2025.
How 91773 compares to nearby zip codes
| Zip | City | Miles | Schools | Avg Score | vs 91773 |
|---|---|---|---|---|---|
| 91773 | San Dimas | — | 9 | 57.1/100 | — |
| 91750 | La Verne | 2.2 | 3 | 68.4/100 | +11.3 |
| 91740 | Glendora | 2.5 | 5 | 41.5/100 | -15.6 |
| 91724 | Covina | 2.9 | 4 | 36.2/100 | -20.9 |
| 91768 | Pomona | 3.5 | 6 | 29.5/100 | -27.5 |
| 91741 | Glendora | 3.5 | 6 | 55.2/100 | -1.8 |
Source: CDE CAASPP 2025, analyzed by SchoolScope.
School archetypes in 91773
Hidden gems: 3 schools in 91773 are classified as Growth Engine (3) — showing positive growth trajectories that raw proficiency scores alone don't capture. These are schools where students leave with more than they arrived with.
Archetypes are data-driven labels based on Scope Score dimensions. Learn more
All schools in 91773
ranked by Scope Score · 2024–25 CAASPP
Elementary Schools (6)
| # | School | Exceeded | Score |
|---|---|---|---|
| 1 | Arma J. Shull Elementary Bonita Unified High Ceiling | 54.0% | Strong 71/100 |
| 2 | Grace Miller Elementary Bonita Unified Growth Engine | 46.3% | Strong 69/100 |
| 3 | Gladstone Elementary Bonita Unified Solid Base | 37.0% | Strong 58/100 |
| 4 | La Verne Heights Elementary Bonita Unified Solid Base | 39.3% | Strong 55/100 |
| 5 | Allen Avenue Elementary Bonita Unified Culture First | 31.4% | Solid 45/100 |
| 6 | Fred Ekstrand Elementary Bonita Unified Building Momentum | 36.5% | Solid 44/100 |
Middle Schools (2)
| # | School | Exceeded | Score |
|---|---|---|---|
| 1 | Ramona Middle Bonita Unified Growth Engine | 40.7% | Strong 75/100 |
| 2 | Lone Hill Middle Bonita Unified Growth Engine | 33.8% | Strong 62/100 |
High Schools (2)
| # | School | Exceeded | Score |
|---|---|---|---|
| 1 | San Dimas High Bonita Unified Strong All-Around | 30.4% | Strong 68/100 |
| 2 | Chaparral High (Continuation) Bonita Unified continuation high school | 3.3% | Developing 23/100 · 48th in class |
Schools in 91773 on the map
Data source: California Department of Education · CAASPP 2024-25 · Methodology
Scores are SchoolScope's analysis of public data, not official CDE ratings. They represent one way of interpreting test results and should not be the sole basis for school decisions.
Numbers tell you whether students are clearing the bar. A school visit tells you whether they're happy doing it. These metrics are intentionally missing from the Scope Score: class sizes and student-teacher interaction quality; arts, music, athletics, and enrichment programs; teacher experience and turnover; campus safety and social-emotional support; parent and community engagement; quality of special education and gifted programs; how school zones and enrollment boundaries affect access. Full methodology