Enrollment
681
California · 2024-25 NCES data
Middle school (grades 6-8) · Concord, CA
Oak Grove Middle
Federal NCES profile for Oak Grove Middle, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 26/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 062637003962
👥 S:T ratio 12
🌟 Gifted program 30
🎓 Counselors 51
📋 Attendance 9
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Oak Grove Middle earns 26/100 on the Resource Investment Index, with class sizes near the California median.
- #1 of 3
- middle schools in Concord · Resource Index
- 26
- Resource Index · Lower
- 22:1
- students per teacher
- 75.8%
- free-lunch eligible
Oak Grove Middle has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Oak Grove Middle ranks #1 of 3 middle schools in Concord, CA.
School address
District: Mt. Diablo Unified · California
NCES ID 062637003962 Verify on NCES CCD record →
Teachers (FTE)
31.0
Federal CCD staff survey
Students per teacher
22:1
vs 21.5:1 California avg
+2% vs state
Free-lunch eligible
75.8%
vs 55.5% California avg
+37% vs state
Student-teacher ratio in context
How Oak Grove Middle compares with California and U.S. medians
What stands out at Oak Grove Middle
Oak Grove Middle is a high-poverty, mid-sized middle school in Concord, California, enrolling 681 students.
At 22:1, its student-teacher ratio sits close to the California median, within a few percentage points of the 21.5:1 state norm, neither notably crowded nor notably small.
Economic need runs somewhat above the state's typical profile, with 75.8% of students eligible for free meals.
Enrollment of 681 puts it in the larger third of California schools by headcount.
Its Resource Investment Index lands in the lower third of 9,998 scored California schools.
Against 1,962 statewide peers matched on enrollment and economic need, it ranks mid-pack at #805.
Its student body is led by Hispanic or Latino (75%) and Asian (10%) (diversity index 42/100).
Counselor coverage is strong, about 243 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 36.3% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Concord's middle schools, it stands alongside El Dorado Middle (861 students): Oak Grove Middle is smaller than that campus by headcount and runs leaner classes (22:1 vs 26.1:1).
Mt. Diablo Unified also operates College Park High (1,948 students) and Northgate High (1,546 students) alongside Oak Grove Middle.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Oak Grove Middle compares
Oak Grove Middle on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 22:1 | ▲ 2% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 75.8% | ▲ 37% | 55.5% | 51.7% |
| Enrollment | 681 | top 25% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
22:1
Leaner classes than 10% of US schools, heavier class loads than most.
681
Bigger than 79% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
75.8%
free-lunch eligible
- 37% above the California average of 55.5%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
22:1
students per teacher
- 2% above state mean
Top 53% in California - lower ratio than 47% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
36.3%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$13,649
per pupil, district-wide
- below California avg of $16,509
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors2.8 FTE
Per 243 students, the combined health-and-guidance staffing load for this school.
Discipline context
16
in-school suspensions + 57 out-of-school
Suspension rate: 2.3 per 100 students. Combined in-school and out-of-school rate: 10.7 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
Hispanic or Latino 75.0%
Asian 9.5%
Two or More 7.6%
White 4.3%
African American 3.1%
Native Hawaiian / Pacific Islander 0.4%
Largest group: Hispanic or Latino at 75.0% of enrollment.
Student-body diversity index 42.0/100
Simpson diversity index - at 42.0, Oak Grove Middle is less mixed than the California school average of 46.0.
Programs
Funding & spending
District-wide per-pupil expenditure for Mt. Diablo Unified, which includes Oak Grove Middle.
$13,649
Per student
-17%
vs California
Avg $16,509
-18%
vs U.S.
Avg $16,593
Revenue mix
Local 46.6%
State 43.9%
Federal 9.4%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Oak Grove Middle Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| College Park High | Larger | Lower economic need | Higher S:T ratio |
| Northgate High | Larger | Lower economic need | Higher S:T ratio |
| Mt. Diablo High | Larger | Lower economic need | Lower S:T ratio |
| Concord High | Larger | Lower economic need | Lower S:T ratio |
| Ygnacio Valley High | Larger | Similar economic need | Lower S:T ratio |
Comparisons are relative to Oak Grove Middle's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,948
- Students per teacher
- 25:1
- Resource Index
- 21/100
- Enrollment
- 1,546
- Students per teacher
- 24.9:1
- Resource Index
- 23/100
- Enrollment
- 1,397
- Students per teacher
- 17.7:1
- Resource Index
- 22/100
- Enrollment
- 1,137
- Students per teacher
- 18.6:1
- Resource Index
- 27/100
- Enrollment
- 1,059
- Students per teacher
- 17.4:1
- Resource Index
- 26/100
Similar middle schools in Concord
2 comparable middle schools (grades 6-8) serving the same city.
Similar middle schools statewide
Matched by enrollment size and by staffing ratio across all of California, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~681 students)
Similar student-teacher ratio (~22:1)
Next steps
Verify locally before acting on Oak Grove Middle's federal record.
- Compare Oak Grove Middle against another school. Compare schools
- Mt. Diablo Unified's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Oak Grove Middle
How many students attend Oak Grove Middle?
Oak Grove Middle has 681 students enrolled. It is a middle school in Concord, CA.
What is the student-teacher ratio at Oak Grove Middle?
The student-teacher ratio at Oak Grove Middle is 22:1, which is 2% higher than the California average of 21.5:1 and 40% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Oak Grove Middle?
75.8% of students at Oak Grove Middle are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Oak Grove Middle?
The largest demographic group at Oak Grove Middle is Hispanic or Latino at 75.0% of enrollment, in Concord, CA.
What is the Resource Investment Index for Oak Grove Middle?
Oak Grove Middle has a Resource Investment Index of 26/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Oak Grove Middle rank among middle schools in Concord?
By Resource Investment Index, Oak Grove Middle ranks #1 of 3 middle schools in Concord, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Concord on the city page.
Is Oak Grove Middle a good school?
Oak Grove Middle earns 26/100 on the Resource Investment Index, with class sizes near the California median. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Mt. Diablo Unified?
Besides Oak Grove Middle, Mt. Diablo Unified also operates College Park High (1,948 students), Northgate High (1,546 students), and Mt. Diablo High (1,397 students). See the Mt. Diablo Unified district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.