- Enrollment
- 721
- Students per teacher
- 14.7:1
- Resource Index
- 47/100
Elementary school (grades K-5) · Mill Valley, CA
Old Mill Elementary
Federal NCES profile for Old Mill Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 45/100.
2024-25 NCES dataElementary school (grades K-5)NCES 062487003713
👥 S:T ratio 13
🌟 Gifted program 30
🎓 Counselors 65
📋 Attendance 70
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Old Mill Elementary earns 45/100 on the Resource Investment Index, with class sizes near the California median.
- #1 of 5
- elementary schools in Mill Valley · Resource Index
- 45
- Resource Index · Typical
- 21.8:1
- students per teacher
- 3.1%
- free-lunch eligible
Old Mill Elementary has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Old Mill Elementary ranks #1 of 5 elementary schools in Mill Valley, CA.
School address
District: Mill Valley Elementary · California
NCES ID 062487003713 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-6 students YoY
Old Mill Elementary held near 251 students from 2022-23 to 2023-24 (-6 headcount).
Teacher FTE held 12.0 → 12.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-6 students YoY 062487003713 · Mill Valley, CA Elementary · SMALL · TRAD
261 enr · 21.8:1 · 3.1% lunch · RII 45
Nearest enrollment peer: Mill Valley Middle (721 students)
Old Mill Elementary held near 251 students from 2022-23 to 2023-24 (-6 headcount). Teacher FTE held 12.0 → 12.0 across the same CCD years. Read with this school → · District book → · California schools → · Find another →
Old Mill Elementary in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Mill Valley Mi
Mill Valley Middle
721 students
- Edna Maguire E
Edna Maguire Elementary
399 students
- Tamalpais Vall
Tamalpais Valley Elementary
368 students
- Park Elementar
Park Elementary
301 students
- This school 261
Old Mill Elementary
261 students
- Strawberry Poi 259
Strawberry Point Elementary
259 students
What this shows Old Mill Elementary reports 261 students on the CCD universe file.
How Old Mill Elementary compares
Old Mill Elementary 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 | 21.8:1 | ▲ 1% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 3.1% | ▼ 94% | 55.5% | 51.7% |
| Enrollment | 261 | top 78% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
21.8:1
Leaner classes than 11% of US schools, heavier class loads than most.
261
Bigger than 27% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
3.1%
free-lunch eligible
- 94% 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
21.8:1
students per teacher
- 1% above state mean
Top 51% in California - lower ratio than 49% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
11.9%
chronically absent (missed 10%+ of school days)
In the 10-15% range, above the pre-pandemic national baseline but within the broader post-pandemic picture.
Funding equity
$21,199
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
Counselors1.5 FTE
Per 174 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 2 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.8 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 70.1%
Two or More 21.5%
Hispanic or Latino 5.7%
Asian 2.7%
Largest group: White at 70.1% of enrollment.
Student-body diversity index 45.8/100
Simpson diversity index - at 45.8, Old Mill Elementary is about as mixed as the California school average of 46.0.
Programs
District finance for Mill Valley Elementary reports $21,199 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Old Mill Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Mill Valley Middle | Larger | Similar economic need | Lower S:T ratio |
| Edna Maguire Elementary | Larger | Similar economic need | Lower S:T ratio |
| Tamalpais Valley Elementary | Larger | Similar economic need | Similar S:T ratio |
| Park Elementary | Similar size | Similar economic need | Higher S:T ratio |
| Strawberry Point Elementary | Similar size | Similar economic need | Similar S:T ratio |
Comparisons are relative to Old Mill Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 399
- Students per teacher
- 19:1
- Resource Index
- 37/100
- Enrollment
- 368
- Students per teacher
- 21.6:1
- Resource Index
- 39/100
- Enrollment
- 301
- Students per teacher
- 25.1:1
- Resource Index
- 36/100
- Enrollment
- 259
- Students per teacher
- 21.6:1
- Resource Index
- 42/100
Similar elementary schools in Mill Valley
4 comparable elementary schools (grades K-5) serving the same city.
Edna Maguire Elementary
Standard public school
399 students 19:1 students per teacher
Tamalpais Valley Elementary
Standard public school
368 students 21.6:1 students per teacher
Park Elementary
Standard public school
301 students 25.1:1 students per teacher
Strawberry Point Elementary
Standard public school
259 students 21.6:1 students per teacher
Nationwide elementary 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 (~261 students)
Frequently asked questions about Old Mill Elementary
How many students attend Old Mill Elementary?
Old Mill Elementary has 261 students enrolled. It is an elementary school in Mill Valley, CA. CCD year-over-year: 257 (2022-23) → 251 (2023-24), nearly flat (-6).
What is the student-teacher ratio at Old Mill Elementary?
The student-teacher ratio at Old Mill Elementary is 21.8:1, which is 1% higher than the California average of 21.5:1 and 39% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Old Mill Elementary?
3.1% of students at Old Mill Elementary are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Old Mill Elementary?
The largest demographic group at Old Mill Elementary is White at 70.1% of enrollment, in Mill Valley, CA.
What is the Resource Investment Index for Old Mill Elementary?
Old Mill Elementary has a Resource Investment Index of 45/100 (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 Old Mill Elementary rank among elementary schools in Mill Valley?
By Resource Investment Index, Old Mill Elementary ranks #1 of 5 elementary schools in Mill Valley, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Mill Valley on the city page.
What other schools are in Mill Valley Elementary?
Besides Old Mill Elementary, Mill Valley Elementary also operates Mill Valley Middle (721 students), Edna Maguire Elementary (399 students), and Tamalpais Valley Elementary (368 students). See the Mill Valley Elementary district page for the complete list.