Castle Rock Elementary
Diamond Bar, CA · Walnut Valley Unified
Regular public school · Grades K-5 · Suburb, large
648th of 5,659 California elementary schools statewide · better than 89%· Stable
2975 Castle Rock Rd., Diamond Bar, CA 91765
(909) 598-5006Official website ↗NCES ID 064128006833Directory 2023–24
SchoolRow ranks Castle Rock Elementary 648th of 5,659 California elementary schools for 2024–25, based on CAASPP 2024–25 English and Math results — better than 89% of elementary schools statewide. Its statewide percentile went from 91th in 2015 to 89th in 2025.
Percent meeting or exceeding the state standard, CAASPP 2024–25 · 383 students tested
Racial and ethnic breakdown of 691 students (2023–24, NCES) — history since 1987, with comparable seven-category changes from 2010
| Group | Trend | 2010 | 2023 | Change |
|---|---|---|---|---|
| Asian | 61.3% | 70.2% | ▲ 8.9 pts | |
| Hispanic | 18.6% | 18.5% | ▼ 0.1 pts | |
| Two or more races | 1.4% | 5.6% | ▲ 4.2 pts | |
| White | 14.5% | 3.8% | ▼ 10.7 pts | |
| Black | 3.5% | 1.0% | ▼ 2.5 pts | |
| Pacific Islander | 0.2% | 0.7% | ▲ 0.5 pts | |
| American Indian | 0.6% | 0.1% | ▼ 0.5 pts |
NCES history for this school begins in 1987. Race categories changed by 2010: earlier data combines Asian and Pacific Islander students and does not consistently identify multiracial students. The chart retains that history, while the change table uses 2010 onward.
Typical home value $1.03M in zip 91765 as of 2026-05 · trend since 2000
Data Provided by Zillow Group
Closest same-level schools, with 2024–25 state rank · ▲▼ = points better or worse than Castle Rock Elementary
- #597Evergreen ElementaryWalnut Valley Unified · 0.7 mi away597th of 5,659
ELA 72% ▲1 · Math 72% ▲1Compare - #160Maple Hill ElementaryWalnut Valley Unified · 1.9 mi away160th of 5,659
ELA 83% ▲12 · Math 83% ▲12Compare - #1096Shelyn ElementaryRowland Unified · 2.1 mi away1,096th of 5,659
ELA 66% ▼5 · Math 60% ▼11Compare - #1822Ybarra Academy for the Arts and TechnologyRowland Unified · 2.1 mi away1,822nd of 5,659
ELA 60% ▼11 · Math 43% ▼28Compare - #408Walnut ElementaryWalnut Valley Unified · 2.1 mi away408th of 5,659
ELA 75% ▲4 · Math 77% ▲6Compare - #283Quail Summit ElementaryWalnut Valley Unified · 2.4 mi away283rd of 5,659
ELA 77% ▲6 · Math 82% ▲11Compare - #2105Killian ElementaryRowland Unified · 2.6 mi away2,105th of 5,659
ELA 49% ▼22 · Math 47% ▼24Compare - #914Cyrus J. Morris ElementaryWalnut Valley Unified · 3.1 mi away914th of 5,659
ELA 64% ▼7 · Math 68% ▼3Compare
What school district is Castle Rock Elementary in?
Castle Rock Elementary is part of the Walnut Valley Unified district in Diamond Bar, California.
Is Castle Rock Elementary a good school?
SchoolRow ranks Castle Rock Elementary 648th of 5,659 California elementary schools (better than 89% statewide) based on 2024–25 test results (CAASPP 2024–25).
What is the racial makeup of Castle Rock Elementary?
Asian 70%, Hispanic 19%, Two or more races 6%, White 4% (691 students, 2023–24).
How much do homes near Castle Rock Elementary cost?
The typical home value in zip code 91765 is $1.03M as of 2026-05 (Zillow ZHVI).
Sources: state education department data (CAASPP 2024–25, low-income, chronic absenteeism), National Center for Education Statistics via the Urban Institute (enrollment, demographics, staffing), Zillow Group (home values). Rankings are computed by SchoolRow from state English and Math results within grade level; they measure test performance, not everything that makes a school good.