Chaparral Middle
Intermediate/Middle Schools (Public)Grades 6–8Active
1405 South Spruce Tree Drive, Diamond Bar, CA 91765-2571
(909) 861-6227
Overall Score (2024-25)
↓ 0.2 ptsvs 2023-2482
out of 100
StrongTop 7% statewideData completeness: 100%
Academic Achievement98
CA avg
Academic Growth42
CA avg
Equity82
CA avg
School Climate99
CA avg
Score reflects percentile ranking among same-type schools. How is this calculated?
Test Scores (2024-25)
Percentage of students meeting or exceeding standards on CAASPP/CAST.
English Language Arts82.8%
CA avg 48.8%
Mathematics80.3%
CA avg 34.6%
Science / CAST (2024-25)66.3%
CA avg 32.7%
By Grade
| Grade | ELA % | Math % | Science % | Tested |
|---|---|---|---|---|
| 06 | 79.3% | 76.6% | — | 463 |
| 07 | 88.5% | 86.3% | — | 436 |
| 08 | 80.9% | 78.2% | 66.3% | 413 |
Enrollment & Demographics (2024-25)
1,349
Total Students
24.6%
Free/Reduced Lunch
10.0%
English Learners
Staff (2024-25)
28.3:1
Pupil-Teacher Ratio
Chronic Absenteeism (2024-25)
3.2%
Chronically Absent
1,393
Students Tracked
Historical Trends
Year-over-year performance data from official CDE records.
Composite Score
ELA Proficiency %
Math Proficiency %
Science / CAST %
Chronic Absenteeism Rate %
Total Enrollment
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Data sourced from the California Department of Education. CDS Code: 19734606096358. Academic Year: 2023-24 – 2024-25.