- Enrollment
- 362
- Students per teacher
- 19.1:1
- Resource Index
- 44/100
Middle school (grades 6-8) · Tiburon, CA
Del Mar Middle
Federal NCES profile for Del Mar Middle, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 46/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 063216004977
👥 S:T ratio 54
🌟 Gifted program 30
📋 Attendance 54
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Del Mar Middle earns 46/100 on the Resource Investment Index, with class sizes smaller than 94% of California schools.
- #1 of 3
- public schools in Tiburon · Resource Index
- 46
- Resource Index · Typical
- 11.6:1
- small classes for California
- 5.5%
- free-lunch eligible
Del Mar Middle has class sizes smaller than 94% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Del Mar Middle ranks #1 of 3 public schools in Tiburon, CA.
School address
District: Reed Union Elementary · California
NCES ID 063216004977 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-24 students YoY
Del Mar Middle shrank from 385 students in 2022-23 to 361 in 2023-24 (-6.2%).
Teacher FTE lost 31.9 → 31.2 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Shrinking CCD campus
-24 students YoY 063216004977 · Tiburon, CA Middle · SMALL · TRAD
359 enr · 11.6:1 · 5.5% lunch · RII 46
Nearest enrollment peer: Reed Elementary (362 students)
Del Mar Middle shrank from 385 students in 2022-23 to 361 in 2023-24 (-6.2%). Teacher FTE lost 31.9 → 31.2 across the same CCD years. Read with this school → · District book → · California schools → · Find another →
Del Mar Middle in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Reed Elementar
Reed Elementary
362 students
- This school
Del Mar Middle
359 students
- Bel Aire Eleme
Bel Aire Elementary
322 students
What this shows Del Mar Middle reports 359 students on the CCD universe file.
How Del Mar Middle compares
Del Mar Middle is a shrinking 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 | 11.6:1 | ▼ 46% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 5.5% | ▼ 90% | 55.5% | 51.7% |
| Enrollment | 359 | top 67% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
11.6:1
Leaner classes than 79% of US schools, among the more generously staffed nationally.
359
Bigger than 41% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
5.5%
free-lunch eligible
- 90% 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
11.6:1
students per teacher
- 46% below state mean
Top 6% in California - lower ratio than 94% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
18.4%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$24,974
per pupil, district-wide
- above California avg of $18,665
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
8
in-school suspensions + 8 out-of-school
Suspension rate: 2.2 per 100 students. Combined in-school and out-of-school rate: 4.5 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 70.6%
Two or More 12.3%
Hispanic or Latino 9.0%
Asian 7.0%
African American 0.8%
American Indian / Alaska Native 0.3%
Largest group: White at 70.6% of enrollment.
Student-body diversity index 47.3/100
Simpson diversity index - at 47.3, Del Mar Middle is about as mixed as the California school average of 46.0.
Programs
District finance for Reed Union Elementary reports $24,974 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Del Mar Middle Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Reed Elementary | Similar size | Similar economic need | Higher S:T ratio |
| Bel Aire Elementary | Similar size | Similar economic need | Higher S:T ratio |
Comparisons are relative to Del Mar Middle's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 322
- Students per teacher
- 17.9:1
- Resource Index
- 45/100
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 (~359 students)
Frequently asked questions about Del Mar Middle
How many students attend Del Mar Middle?
Del Mar Middle has 359 students enrolled. It is a middle school in Tiburon, CA. CCD year-over-year: 385 (2022-23) → 361 (2023-24), down 24.
What is the student-teacher ratio at Del Mar Middle?
The student-teacher ratio at Del Mar Middle is 11.6:1, which is 46% lower than the California average of 21.5:1 and 26% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Del Mar Middle?
5.5% of students at Del Mar Middle are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Del Mar Middle?
The largest demographic group at Del Mar Middle is White at 70.6% of enrollment, in Tiburon, CA.
What is the Resource Investment Index for Del Mar Middle?
Del Mar Middle has a Resource Investment Index of 46/100 (typical reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, gifted-program reporting, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Del Mar Middle rank among public schools in Tiburon?
By Resource Investment Index, Del Mar Middle ranks #1 of 3 public schools in Tiburon, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking.
What other schools are in Reed Union Elementary?
Besides Del Mar Middle, Reed Union Elementary also operates Reed Elementary (362 students) and Bel Aire Elementary (322 students). See the Reed Union Elementary district page for the complete list.