- Enrollment
- 1,071
- Students per teacher
- 20.6:1
- Resource Index
- 36/100
Middle school (grades 6-8) · Sonoma, CA
Altimira Middle
Federal NCES profile for Altimira Middle, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 45/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 063720006298
👥 S:T ratio 38
🌟 Gifted program 70
🎓 Counselors 71
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Altimira Middle earns 45/100 on the Resource Investment Index, with class sizes smaller than 88% of California schools.
- #2 of 10
- public schools in Sonoma · Resource Index
- 45
- Resource Index · Typical
- 15.4:1
- small classes for California
- 50.8%
- free-lunch eligible
Altimira Middle has class sizes smaller than 88% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Altimira Middle ranks #2 of 10 public schools in Sonoma, CA.
School address
District: Sonoma Valley Unified · California
NCES ID 063720006298 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-41 students YoY
Altimira Middle shrank from 392 students in 2022-23 to 351 in 2023-24 (-10.5%).
Teacher FTE lost 21.9 → 21.6 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Shrinking CCD campus
-41 students YoY 063720006298 · Sonoma, CA Middle · SMALL · TRAD
324 enr · 15.4:1 · 50.8% lunch · RII 45
Nearest enrollment peer: Sonoma Valley High (1,071 students)
Altimira Middle shrank from 392 students in 2022-23 to 351 in 2023-24 (-10.5%). Teacher FTE lost 21.9 → 21.6 across the same CCD years. Read with this school → · District book → · California schools → · Find another →
Altimira Middle in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Sonoma Valley
Sonoma Valley High
1,071 students
- Flowery Elemen 368
Flowery Elementary
368 students
- Adele Harrison 334
Adele Harrison Middle
334 students
- This school 324
Altimira Middle
324 students
- El Verano Elem 314
El Verano Elementary
314 students
- Sassarini Elem 281
Sassarini Elementary
281 students
What this shows Altimira Middle reports 324 students on the CCD universe file.
How Altimira Middle compares
Altimira 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 | 15.4:1 | ▼ 28% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 50.8% | ▼ 8% | 55.5% | 51.7% |
| Enrollment | 324 | top 71% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.4:1
Leaner classes than 43% of US schools, a middle-of-the-pack class size.
324
Bigger than 36% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
50.8%
free-lunch eligible
- 8% below the California average of 55.5%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
15.4:1
students per teacher
- 28% below state mean
Top 12% in California - lower ratio than 88% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
50.0%
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
$23,762
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
Counselors2.2 FTE
Per 147 students, the combined health-and-guidance staffing load for this school.
Discipline context
26
in-school suspensions + 13 out-of-school
Suspension rate: 8.0 per 100 students. Combined in-school and out-of-school rate: 12.0 per 100 students. Reported via the Civil Rights Data Collection. Includes 1 expulsion.
Student demographics
Hispanic or Latino 83.3%
White 14.8%
Two or More 1.2%
Asian 0.3%
American Indian / Alaska Native 0.3%
Largest group: Hispanic or Latino at 83.3% of enrollment.
Student-body diversity index 28.4/100
Simpson diversity index - at 28.4, Altimira Middle is less mixed than the California school average of 46.0.
Programs
Gifted & talented Yes
District finance for Sonoma Valley Unified reports $23,762 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Altimira Middle Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Sonoma Valley High | Larger | Lower economic need | Higher S:T ratio |
| Flowery Elementary | Similar size | Similar economic need | Higher S:T ratio |
| Adele Harrison Middle | Similar size | Lower economic need | Higher S:T ratio |
| El Verano Elementary | Similar size | Similar economic need | Higher S:T ratio |
| Sassarini Elementary | Similar size | Similar economic need | Higher S:T ratio |
Comparisons are relative to Altimira Middle's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 368
- Students per teacher
- 24.5:1
- Resource Index
- 11/100
- Enrollment
- 334
- Students per teacher
- 19.6:1
- Resource Index
- 30/100
- Enrollment
- 314
- Students per teacher
- 26.2:1
- Resource Index
- 7/100
- Enrollment
- 281
- Students per teacher
- 21.6:1
- Resource Index
- 19/100
Similar middle schools in Sonoma
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 (~324 students)
Frequently asked questions about Altimira Middle
How many students attend Altimira Middle?
Altimira Middle has 324 students enrolled. It is a middle school in Sonoma, CA. CCD year-over-year: 392 (2022-23) → 351 (2023-24), down 41.
What is the student-teacher ratio at Altimira Middle?
The student-teacher ratio at Altimira Middle is 15.4:1, which is 28% lower than the California average of 21.5:1 and 2% 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 Altimira Middle?
50.8% of students at Altimira Middle are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Altimira Middle?
The largest demographic group at Altimira Middle is Hispanic or Latino at 83.3% of enrollment, in Sonoma, CA.
What is the Resource Investment Index for Altimira Middle?
Altimira Middle 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 Altimira Middle rank among public schools in Sonoma?
By Resource Investment Index, Altimira Middle ranks #2 of 10 public schools in Sonoma, 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 Sonoma on the city page.
What other schools are in Sonoma Valley Unified?
Besides Altimira Middle, Sonoma Valley Unified also operates Sonoma Valley High (1,071 students), Flowery Elementary (368 students), and Adele Harrison Middle (334 students). See the Sonoma Valley Unified district page for the complete list.