Grade Trends

Castle Rock Elementary

Grades K–5 Public District: Walnut Valley Unified

2975 Castle Rock Rd., Diamond Bar, CA 91765 Map

Math (met standard)
68%
+26 state 42% · 2025-26
English (met standard)
66%
+19 state 47% · 2025-26
Science (met standard)
52%
+17 state 35% · 2025-26
Low income
27%
free or reduced-price lunch
Students
684
2024-25
Students per teacher
26.1
2024-25

Test score trends

Share of students who met or exceeded the state standard each year.

Latest results by grade

Grade Math English Science
Grade 3 69% state 47% · 2025-26 70% state 44% · 2025-26 —
Grade 4 72% state 42% · 2025-26 64% state 46% · 2025-26 —
Grade 5 64% state 37% · 2025-26 64% state 49% · 2025-26 52% state 35% · 2025-26
All grades 68% state 42% · 2025-26 66% state 47% · 2025-26 52% state 35% · 2025-26
Results by year (all grades)
School year Math English Science
2025-26 68% state 42% 66% state 47% 52% state 35%
2024-25 71% state 41% 71% state 47% 59% state 33%
2023-24 68% state 41% 68% state 45% 59% state 33%
2022-23 70% state 40% 74% state 45% 58% state 32%
2021-22 71% state 38% 71% state 44% 62% state 31%
2018-19 74% state 45% 71% state 50% 57% state 32%
2017-18 71% state 43% 70% state 49% —
2016-17 73% state 40% 68% state 45% —
2015-16 80% state 39% 75% state 45% —
2014-15 71% state 35% 67% state 41% —

Students

Race and ethnicity, 2024-25

Year-by-year history is loaded from the NCES Common Core of Data (2017-18 onward).

Nearby schools

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

Pick to compare
Evergreen Elementary
Grades K–5 · Walnut Valley Unified
0.7 mi
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%
Maple Hill Elementary
Grades K–5 · Walnut Valley Unified
2.0 mi
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%
Shelyn Elementary
Grades K–6 · Rowland Unified
2.0 mi
68%
+27 vs state
71%
+24 vs state
53%
+18 vs state
9% Average of math, English and science: 55% in 2022-23 → 64% in 2025-26 64% 508 Asian 69%
Ybarra Academy for the Arts and Technology
Grades K–8 · Rowland Unified
2.1 mi
44%
+5 vs state
60%
+12 vs state
42%
+6 vs state
4% Average of math, English and science: 45% in 2022-23 → 49% in 2025-26 67% 630 Hispanic 56%
Walnut Elementary
Grades K–5 · Walnut Valley Unified
2.1 mi
78%
+36 vs state
72%
+26 vs state
64%
+28 vs state
Average of math, English and science: 72% in 2022-23 → 71% in 2025-26 25% 706 Asian 78%
Quail Summit Elementary
Grades K–5 · Walnut Valley Unified
2.4 mi
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%
Killian Elementary
Grades K–6 · Rowland Unified
2.6 mi
49%
+8 vs state
54%
+7 vs state
30%
−5 vs state
8% Average of math, English and science: 52% in 2022-23 → 44% in 2025-26 79% 469 Asian 59%
Cyrus J. Morris Elementary
Grades K–5 · Walnut Valley Unified
3.1 mi
69%
+27 vs state
67%
+21 vs state
62%
+26 vs state
3% Average of math, English and science: 63% in 2022-23 → 66% in 2025-26 28% 485 Asian 71%
Blandford Elementary
Grades K–6 · Rowland Unified
3.1 mi
57%
+16 vs state
54%
+7 vs state
46%
+11 vs state
Average of math, English and science: 54% in 2022-23 → 52% in 2025-26 74% 643 Asian 61%
Hollingworth Elementary
Grades K–6 · Rowland Unified
3.2 mi
28%
−13 vs state
37%
−10 vs state
27%
−8 vs state
3% Average of math, English and science: 33% in 2022-23 → 30% in 2025-26 73% 382 Hispanic 72%