Enrollment & Outcomes Scorecard
Diamond Bar High School
Public · Diamond Bar · Los Angeles County · 2,622 students · Class of 2025
★ Top 10% UC Reach
UC Reach · Class of 2025
65%
Higher than 95% of California high schools
+36.0 pp above peer median (28.6%)
· Ranked #2 of 11 similar schools
5-year UC Reach
2021 · 65.0%
2025 · 64.6%
-20%
Senior-class enrollment (2018–2026)
-11.9 pp
vs. Los Angeles County baseline (-8%)
~2519
5-yr projected enrollment (103 fewer than today)
- ▸On UC Reach, Diamond Bar High School sits near the top of its similar-school group (ranked #2 of 11): 65% vs. a peer median of 29%.
- ▸Its UC Reach has slipped 2 points since 2018 — worth watching.
- ▸Senior-class enrollment is down 20% (811→648 from 2018 to 2026), trailing the peer-group median of -4%.
- ▸At its recent rate (-1.3%/yr), enrollment projects to ~2519 by 2029 — about 103 fewer students than today.
Most similar nearby schools
| School | Type | UC Reach | Enroll. |
|---|---|---|---|
| Ruben S Ayala High School | Public | 44.8% | -6% |
| Walnut High School | Public | 51.2% | -18% |
| John a Rowland High School | Public | 24.0% | -2% |
| Chino Hills High School | Public | 29.3% | -1% |
| Troy High School | Public | 71.6% | -16% |
| LA Serna High School | Public | 16.6% | -15% |
UC Reach = top-6 UC admits ÷ senior class. Sources: UCOP Admissions by Source School, CDE enrollment, IRS Form 990, NCES F-33. Test Prep Gurus Intelligence by Test Prep Gurus · Methodology
Scan for full profile