- Enrollment
- 2,563
- Students per teacher
- 26.7:1
- Resource Index
- 48/100
Middle school (grades 6-8) · Diamond Bar, CA
Chaparral Middle
Federal NCES profile for Chaparral Middle, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 41/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 064128006834
👥 S:T ratio 0
🌟 Gifted program 70
🎓 Counselors 10
📋 Attendance 85
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Chaparral Middle earns 41/100 on the Resource Investment Index, with class sizes larger than 96% of California schools.
- #3 of 10
- public schools in Diamond Bar · Resource Index
- 41
- Resource Index · Typical
- 30.7:1
- large classes for California
- 21.5%
- free-lunch eligible
Chaparral Middle has class sizes larger than 96% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Chaparral Middle ranks #3 of 10 public schools in Diamond Bar, CA.
School address
District: Walnut Valley Unified · California
NCES ID 064128006834 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+71 students YoY
Chaparral Middle grew from 1,133 students in 2022-23 to 1,204 in 2023-24 (+6.3%).
Teacher FTE added 44.2 → 45.8 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Growing CCD campus
+71 students YoY 064128006834 · Diamond Bar, CA Middle · MID · TRAD
1,349 enr · 30.7:1 · 21.5% lunch · RII 41
Nearest enrollment peer: Diamond Bar High (2,563 students)
Chaparral Middle grew from 1,133 students in 2022-23 to 1,204 in 2023-24 (+6.3%). Teacher FTE added 44.2 → 45.8 across the same CCD years. Read with this school → · District book → · California schools → · Find another →
Chaparral Middle in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Diamond Bar Hi
Diamond Bar High
2,563 students
- Walnut High
Walnut High
2,148 students
- This school
Chaparral Middle
1,349 students
- Suzanne Middle
Suzanne Middle
1,190 students
- South Pointe M 979
South Pointe Middle
979 students
- Evergreen Elem 709
Evergreen Elementary
709 students
What this shows Chaparral Middle reports 1,349 students on the CCD universe file.
How Chaparral Middle compares
Chaparral Middle is a growing campus on CCD: ratios and free-lunch share vs California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 30.7:1 | ▲ 43% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 21.5% | ▼ 61% | 55.5% | 51.7% |
| Enrollment | 1,349 | top 7% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
30.7:1
Leaner classes than 2% of US schools, heavier class loads than most.
1,349
Bigger than 95% of US schools by enrollment, a large campus nationally.
Equity indicators methodology
Economic need
21.5%
free-lunch eligible
- 61% below the California average of 55.5%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
30.7:1
students per teacher
- 43% above state mean
Top 96% in California - lower ratio than 4% of state schools
Well above 20:1, one of the more stretched staffing loads nationally relative to enrollment.
Engagement
6.0%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$13,963
per pupil, district-wide
- below California avg of $18,665
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors3.0 FTE
Per 450 students, the combined health-and-guidance staffing load for this school.
Discipline context
14
in-school suspensions + 20 out-of-school
Suspension rate: 1.0 per 100 students. Combined in-school and out-of-school rate: 2.5 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
Asian 77.5%
Hispanic or Latino 14.5%
White 3.6%
Two or More 3.3%
African American 1.2%
Largest group: Asian at 77.5% of enrollment.
Student-body diversity index 37.6/100
Simpson diversity index - at 37.6, Chaparral Middle is less mixed than the California school average of 46.0.
Programs
Gifted & talented Yes
District finance for Walnut Valley Unified reports $13,963 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Chaparral Middle Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Diamond Bar High | Larger | Similar economic need | Lower S:T ratio |
| Walnut High | Larger | Similar economic need | Lower S:T ratio |
| Suzanne Middle | Similar size | Similar economic need | Lower S:T ratio |
| South Pointe Middle | Smaller | Similar economic need | Lower S:T ratio |
| Evergreen Elementary | Smaller | Similar economic need | Lower S:T ratio |
Comparisons are relative to Chaparral Middle's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,148
- Students per teacher
- 23.1:1
- Resource Index
- 52/100
- Enrollment
- 1,190
- Students per teacher
- 27:1
- Resource Index
- 43/100
- Enrollment
- 979
- Students per teacher
- 27.2:1
- Resource Index
- 47/100
- Enrollment
- 709
- Students per teacher
- 25.3:1
- Resource Index
- 27/100
Similar middle schools in Diamond Bar
1 comparable middle schools (grades 6-8) serving the same city.
Nationwide middle schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~1,349 students)
Frequently asked questions about Chaparral Middle
How many students attend Chaparral Middle?
Chaparral Middle has 1,349 students enrolled. It is a middle school in Diamond Bar, CA. CCD year-over-year: 1,133 (2022-23) → 1,204 (2023-24), up 71.
What is the student-teacher ratio at Chaparral Middle?
The student-teacher ratio at Chaparral Middle is 30.7:1, which is 43% higher than the California average of 21.5:1 and 96% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Chaparral Middle?
21.5% of students at Chaparral Middle are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Chaparral Middle?
The largest demographic group at Chaparral Middle is Asian at 77.5% of enrollment, in Diamond Bar, CA.
What is the Resource Investment Index for Chaparral Middle?
Chaparral Middle has a Resource Investment Index of 41/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Chaparral Middle rank among public schools in Diamond Bar?
By Resource Investment Index, Chaparral Middle ranks #3 of 10 public schools in Diamond Bar, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Diamond Bar on the city page.
What other schools are in Walnut Valley Unified?
Besides Chaparral Middle, Walnut Valley Unified also operates Diamond Bar High (2,563 students), Walnut High (2,148 students), and Suzanne Middle (1,190 students). See the Walnut Valley Unified district page for the complete list.