Castle Rock Elementary
Diamond Bar, CA · Walnut Valley Unified · Grades K-5
648th of 5,659 California elementary schools statewide · better than 89%· Stable
Castle Rock Elementary ranking
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.
Castle Rock Elementary test scores
Percent meeting or exceeding the state standard, CAASPP 2024–25 · 383 students tested
Castle Rock Elementary students
Racial and ethnic breakdown of 691 students (2023–24, NCES) — and how it has shifted since 2013
| Group | Trend | 2013 | 2023 | Change |
|---|---|---|---|---|
| Asian | 64.9% | 70.2% | ▲ 5.3 pts | |
| Hispanic | 19.0% | 18.5% | ▼ 0.5 pts | |
| Two or more races | 4.7% | 5.6% | ▲ 0.9 pts | |
| White | 8.1% | 3.8% | ▼ 4.3 pts | |
| Black | 2.6% | 1.0% | ▼ 1.6 pts | |
| Pacific Islander | 0.3% | 0.7% | ▲ 0.4 pts |
Homes near Castle Rock Elementary
Typical home value $1.03M in zip 91765 as of 2026-05 · trend since 2000
Data Provided by Zillow Group
Elementary schools near Castle Rock Elementary
Closest same-level schools, with 2024–25 state rank
- 9Evergreen ElementaryWalnut Valley Unified · 0.7 mi away597th of 5,659
ELA 72% · Math 72% - 10Maple Hill ElementaryWalnut Valley Unified · 1.9 mi away160th of 5,659
ELA 83% · Math 83% - 9Shelyn ElementaryRowland Unified · 2.1 mi away1,096th of 5,659
ELA 66% · Math 60% - 7Ybarra Academy for the Arts and TechnologyRowland Unified · 2.1 mi away1,822nd of 5,659
ELA 60% · Math 43% - 10Walnut ElementaryWalnut Valley Unified · 2.1 mi away408th of 5,659
ELA 75% · Math 77% - 10Quail Summit ElementaryWalnut Valley Unified · 2.4 mi away283rd of 5,659
ELA 77% · Math 82% - 7Killian ElementaryRowland Unified · 2.6 mi away2,105th of 5,659
ELA 49% · Math 47% - 9Cyrus J. Morris ElementaryWalnut Valley Unified · 3.1 mi away914th of 5,659
ELA 64% · Math 68%
Frequently asked questions
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.