Chaparral Middle
Diamond Bar, CA · Walnut Valley Unified
Regular public school · Grades 6-8 · Suburb, large
30th of 1,294 California middle schools statewide · better than 98%▲ Improving
1405 South Spruce Tree Dr., Diamond Bar, CA 91765
(909) 861-6227Official website ↗NCES ID 064128006834Directory 2023–24
SchoolRow ranks Chaparral Middle 30th of 1,294 California middle schools for 2024–25, based on CAASPP 2024–25 English and Math results — better than 98% of middle schools statewide. Its statewide percentile went from 93th in 2015 to 98th in 2025 — improving.
Percent meeting or exceeding the state standard, CAASPP 2024–25 · 1,350 students tested
Racial and ethnic breakdown of 1,204 students (2023–24, NCES) — history since 1987, with comparable seven-category changes from 2010
| Group | Trend | 2010 | 2023 | Change |
|---|---|---|---|---|
| Asian | 64.8% | 74.6% | ▲ 9.8 pts | |
| Hispanic | 16.2% | 15.9% | ▼ 0.3 pts | |
| White | 14.2% | 4.7% | ▼ 9.5 pts | |
| Two or more races | 0.5% | 3.5% | ▲ 3.0 pts | |
| Black | 3.8% | 1.2% | ▼ 2.6 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 Chaparral Middle
- #41South Pointe MiddleWalnut Valley Unified · 1.8 mi away41st of 1,294
ELA 80% ▼3 · Math 79% ▼1Compare - #584Lorbeer MiddlePomona Unified · 2.3 mi away584th of 1,294
ELA 47% ▼36 · Math 31% ▼49Compare - #142Suzanne MiddleWalnut Valley Unified · 2.6 mi away142nd of 1,294
ELA 73% ▼10 · Math 64% ▼16Compare - #127Canyon Hills Junior HighChino Valley Unified · 4 mi away127th of 1,294
ELA 76% ▼7 · Math 64% ▼16Compare - #458Alvarado IntermediateRowland Unified · 4.4 mi away458th of 1,294
ELA 46% ▼37 · Math 42% ▼38Compare - #834Marshall MiddlePomona Unified · 5.2 mi away834th of 1,294
ELA 42% ▼41 · Math 17% ▼63Compare - #841Giano IntermediateRowland Unified · 5.2 mi away841st of 1,294
ELA 36% ▼47 · Math 23% ▼57Compare - #168Robert O. Townsend Junior HighChino Valley Unified · 5.4 mi away168th of 1,294
ELA 70% ▼13 · Math 62% ▼18Compare
What school district is Chaparral Middle in?
Chaparral Middle is part of the Walnut Valley Unified district in Diamond Bar, California.
Is Chaparral Middle a good school?
SchoolRow ranks Chaparral Middle 30th of 1,294 California middle schools (better than 98% statewide) based on 2024–25 test results (CAASPP 2024–25).
What is the racial makeup of Chaparral Middle?
Asian 75%, Hispanic 16%, White 5%, Two or more races 4% (1,204 students, 2023–24).
How much do homes near Chaparral Middle 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.