Schools in 91765 — Diamond Bar, California: 91765 schools aren't just reaching proficiency — they're pushing students beyond it.
91765 has 9 ranked schools in Diamond Bar, averaging a Scope Score of 67.8/100 — 23.0 points above the state average of 44.8 (CDE CAASPP 2025). Scores range from 39.8 to 82.6, a 42.8-point spread. 7 schools rank in the 90th percentile or above statewide.
How 91765 schools perform
The top-ranked school is Chaparral Middle with a Scope Score of 83 and 58.3% of students exceeding standard.
These schools are pushing students past the bar, not just to it. Schools here average 44.5% exceeding standard — well above the statewide average of 21.3%.
Chronic absenteeism across 91765 averages 9.0%, below the state average of 17.9%. CDE CAASPP 2025.
How 91765 compares to nearby zip codes
| Zip | City | Schools | Avg Score | vs 91765 |
|---|---|---|---|---|
| 91765 | Diamond Bar | 9 | Solid 67.8/100 | — |
| 91764 | Ontario | 13 | Developing 42.3/100 | -25.5 |
| 91766 | Pomona | 14 | Developing 37.2/100 | -30.6 |
| 91763 | Montclair | 8 | Developing 50.0/100 | -17.9 |
| 91767 | Pomona | 11 | Developing 33.5/100 | -34.3 |
| 91762 | Ontario | 11 | Developing 46.2/100 | -21.7 |
Source: CDE CAASPP 2025, analyzed by SchoolScope.
School archetypes in 91765
Hidden gems: 1 school in 91765 is classified as Growth Engine — 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 91765
ranked by Scope Score · 2024–25 CAASPP
| # | School | Exceeded | Score |
|---|---|---|---|
| 1 | Chaparral Middle Walnut Valley Unified High Ceiling | 58.3% | Strong 83/100 |
| 2 | Maple Hill Elementary Walnut Valley Unified High Ceiling | 60.6% | Strong 78/100 |
| 3 | Pantera Elementary Pomona Unified High Ceiling | 52.6% | Strong 78/100 |
| 4 | Diamond Bar High Walnut Valley Unified Strong All-Around | 46.3% | Strong 74/100 |
| 5 | Evergreen Elementary Walnut Valley Unified Strong All-Around | 47.2% | Strong 72/100 |
| 6 | Quail Summit Elementary Walnut Valley Unified High Ceiling | 52.3% | Strong 70/100 |
| 7 | Castle Rock Elementary Walnut Valley Unified Building Momentum | 42.9% | Solid 69/100 |
| 8 | Armstrong Elementary Pomona Unified Growth Engine | 21.4% | Developing 47/100 |
| 9 | Golden Springs Elementary Pomona Unified Building Momentum | 18.7% | Developing 40/100 |
Schools in 91765 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