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Top 7 Elementary Schools in Diamond Bar, California

The highest-scoring elementary schools in Diamond Bar based on our 6-dimension composite analysis of 2025 CAASPP data (state average: 45.5).

What separates the top from the rest: The top 3 schools average 55.1% Exceeded Standard, compared to 26.0% for the bottom 3 on this list. The exceeded rate — not just the met rate — is the clearest differentiator between good and great schools.

# School County Score Exceeded Met+ Absent Susp.
1 Maple Hill Elementary
Walnut Valley Unified
 Los Angeles 76.8 60.7% 82.6% 3.7% 0.0%
2 Quail Summit Elementary
Walnut Valley Unified
 Los Angeles 72.5 52.3% 79.3% 6.4% 0.4%
3 Pantera Elementary
Pomona Unified
 Los Angeles 69.2 52.4% 78.1% 3.8% 0.0%
4 Evergreen Elementary
Walnut Valley Unified
 Los Angeles 67.0 47.2% 72.0% 5.1% 0.0%
5 Castle Rock Elementary
Walnut Valley Unified
 Los Angeles 64.3 43.0% 71.1% 6.4% 0.1%
6 Armstrong Elementary
Pomona Unified
 Los Angeles 47.5 18.1% 39.2% 21.3% 1.8%
7 Golden Springs Elementary
Pomona Unified
 Los Angeles 45.3 17.1% 49.1% 17.6% 1.0%

Related

All Schools in Diamond Bar All California Schools How We Score
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