Grade Trends

Diamond Bar, CA public schools

10 public schools. Tick schools to compare their trends.

Subject percentages show the share of students who met or exceeded the state standard.

Pick to compare
Armstrong Elementary
Grades K–6 · Pomona Unified
26%
−15 vs state
45%
−1 vs state
37%
+2 vs state
3% Average of math, English and science: 39% in 2022-23 → 36% in 2025-26 67% 251 Hispanic 60%
Castle Rock Elementary
Grades K–5 · Walnut Valley Unified
68%
+26 vs state
66%
+19 vs state
52%
+17 vs state
5% Average of math, English and science: 67% in 2022-23 → 62% in 2025-26 27% 684 Asian 70%
Chaparral Middle
Grades 6–8 · Walnut Valley Unified
81%
+44 vs state
81%
+32 vs state
70%
+34 vs state
4% Average of math, English and science: 73% in 2022-23 → 77% in 2025-26 25% 1,349 Asian 77%
Diamond Bar High
Grades 9–12 · Walnut Valley Unified
68%
+36 vs state
78%
+21 vs state
58%
+25 vs state
Average of math, English and science: 67% in 2022-23 → 68% in 2025-26 23% 2,563 Asian 72%
Evergreen Elementary
Grades K–5 · Walnut Valley Unified
68%
+26 vs state
69%
+23 vs state
62%
+26 vs state
4% Average of math, English and science: 70% in 2022-23 → 66% in 2025-26 26% 709 Asian 70%
Golden Springs Elementary
Grades K–6 · Pomona Unified
42%
+1 vs state
57%
+10 vs state
37%
+2 vs state
Average of math, English and science: 43% in 2022-23 → 45% in 2025-26 72% 388 Hispanic 69%
Lorbeer Middle
Grades 7–8 · Pomona Unified
33%
−4 vs state
51%
+1 vs state
33%
−3 vs state
7% Average of math, English and science: 32% in 2022-23 → 39% in 2025-26 74% 688 Hispanic 73%
Maple Hill Elementary
Grades K–5 · Walnut Valley Unified
80%
+38 vs state
82%
+36 vs state
65%
+30 vs state
4% Average of math, English and science: 80% in 2022-23 → 76% in 2025-26 27% 556 Asian 80%
Pantera Elementary
Grades K–6 · Pomona Unified
81%
+40 vs state
82%
+36 vs state
65%
+30 vs state
4% Average of math, English and science: 72% in 2022-23 → 76% in 2025-26 48% 512 Asian 68%
Quail Summit Elementary
Grades K–5 · Walnut Valley Unified
81%
+39 vs state
75%
+28 vs state
76%
+40 vs state
3% Average of math, English and science: 80% in 2022-23 → 77% in 2025-26 25% 696 Asian 74%

Overall change: average of the three subjects, latest year vs. 3 years earlier (↑4% means the average rate went up 4 points, e.g. 82% → 86%; — means within ±2%). Low income = eligible for free or reduced-price lunch.