- Enrollment
- 1,948
- Students per teacher
- 25:1
- Resource Index
- 21/100
Middle school (grades 6-8) · Concord, CA
El Dorado Middle
Federal NCES profile for El Dorado Middle, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 14/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 062637003944
👥 S:T ratio 0
🌟 Gifted program 30
🎓 Counselors 14
📋 Attendance 12
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
El Dorado Middle earns 14/100 on the Resource Investment Index, with class sizes larger than 86% of California schools.
- #3 of 3
- middle schools in Concord · Resource Index
- 14
- Resource Index · Lower
- 26.1:1
- large classes for California
- 58.8%
- free-lunch eligible
El Dorado Middle has class sizes larger than 86% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, El Dorado Middle ranks #3 of 3 middle schools in Concord, CA.
School address
District: Mt. Diablo Unified · California
NCES ID 062637003944 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-21 students YoY
El Dorado Middle held near 811 students from 2022-23 to 2023-24 (-21 headcount).
Teacher FTE added 33.2 → 34.9 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-21 students YoY 062637003944 · Concord, CA Middle · MID · TRAD
861 enr · 26.1:1 · 58.8% lunch · RII 14
Nearest enrollment peer: College Park High (1,948 students)
El Dorado Middle held near 811 students from 2022-23 to 2023-24 (-21 headcount). Teacher FTE added 33.2 → 34.9 across the same CCD years. Read with this school → · District book → · California schools → · Find another →
El Dorado Middle in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- College Park H
College Park High
1,948 students
- Northgate High
Northgate High
1,546 students
- Mt. Diablo Hig
Mt. Diablo High
1,397 students
- Concord High
Concord High
1,137 students
- Ygnacio Valley
Ygnacio Valley High
1,059 students
- This school
El Dorado Middle
861 students
What this shows El Dorado Middle reports 861 students on the CCD universe file.
How El Dorado Middle compares
El Dorado Middle held steady on CCD headcount: ratios and free-lunch share vs California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 26.1:1 | ▲ 21% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 58.8% | ▲ 6% | 55.5% | 51.7% |
| Enrollment | 861 | top 15% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
26.1:1
Leaner classes than 4% of US schools, heavier class loads than most.
861
Bigger than 88% of US schools by enrollment, a large campus nationally.
Equity indicators methodology
Economic need
58.8%
free-lunch eligible
- 6% 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
26.1:1
students per teacher
- 21% above state mean
Top 86% in California - lower ratio than 14% of state schools
Well above 20:1, one of the more stretched staffing loads nationally relative to enrollment.
Engagement
35.2%
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
$15,273
per pupil, district-wide
- below California avg of $18,665
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors2.0 FTE
Per 431 students, the combined health-and-guidance staffing load for this school.
Discipline context
28
in-school suspensions + 49 out-of-school
Suspension rate: 3.3 per 100 students. Combined in-school and out-of-school rate: 8.9 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
Hispanic or Latino 56.8%
White 16.1%
Asian 11.1%
Two or More 10.6%
African American 2.8%
Native Hawaiian / Pacific Islander 2.4%
American Indian / Alaska Native 0.1%
Largest group: Hispanic or Latino at 56.8% of enrollment.
Student-body diversity index 62.7/100
Simpson diversity index - at 62.7, El Dorado Middle is more mixed than the California school average of 46.0.
Programs
District finance for Mt. Diablo Unified reports $15,273 per pupil (NCES F-33) - open the district page for the full revenue mix.
How El Dorado Middle Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| College Park High | Larger | Lower economic need | Similar S:T ratio |
| Northgate High | Larger | Lower economic need | Similar S:T ratio |
| Mt. Diablo High | Larger | Similar economic need | Lower S:T ratio |
| Concord High | Larger | Lower economic need | Lower S:T ratio |
| Ygnacio Valley High | Similar size | Higher economic need | Lower S:T ratio |
Comparisons are relative to El Dorado Middle's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- 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.
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 (~861 students)
Frequently asked questions about El Dorado Middle
How many students attend El Dorado Middle?
El Dorado Middle has 861 students enrolled. It is a middle school in Concord, CA. CCD year-over-year: 832 (2022-23) → 811 (2023-24), nearly flat (-21).
What is the student-teacher ratio at El Dorado Middle?
The student-teacher ratio at El Dorado Middle is 26.1:1, which is 21% higher than the California average of 21.5:1 and 66% higher than the national average of 15.7:1.
What percentage of students receive free lunch at El Dorado Middle?
58.8% of students at El Dorado Middle are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of El Dorado Middle?
The largest demographic group at El Dorado Middle is Hispanic or Latino at 56.8% of enrollment, in Concord, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 62.7/100.
What is the Resource Investment Index for El Dorado Middle?
El Dorado Middle has a Resource Investment Index of 14/100 (lower 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 El Dorado Middle rank among middle schools in Concord?
By Resource Investment Index, El Dorado Middle ranks #3 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.
What other schools are in Mt. Diablo Unified?
Besides El Dorado 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.