Enrollment
281
California · 2024-25 NCES data
Elementary school (grades K-5) · Sonoma, CA
Sassarini Elementary
Federal NCES profile for Sassarini Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 19/100.
2024-25 NCES dataElementary school (grades K-5)NCES 063720006303
👥 S:T ratio 14
🌟 Gifted program 30
📋 Attendance 14
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Sassarini Elementary earns 19/100 on the Resource Investment Index, with class sizes near the California median.
- #2 of 6
- elementary schools in Sonoma · Resource Index
- 19
- Resource Index · Lower
- 21.6:1
- students per teacher
- 55.4%
- free-lunch eligible
Sassarini Elementary has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Sassarini Elementary ranks #2 of 6 elementary schools in Sonoma, CA.
School address
District: Sonoma Valley Unified · California
NCES ID 063720006303 Verify on NCES CCD record →
Teachers (FTE)
13.0
Federal CCD staff survey
Students per teacher
21.6:1
vs 21.5:1 California avg
+0% vs state
Free-lunch eligible
55.4%
vs 55.5% California avg
-0% vs state
Student-teacher ratio in context
How Sassarini Elementary compares with California and U.S. medians
What stands out at Sassarini Elementary
Sassarini Elementary is a higher-need, mid-sized elementary school in Sonoma, California, enrolling 281 students.
At 21.6:1, 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.
Its free-meal eligibility rate of 55.4% lands close to the California typical range, neither a high- nor low-need campus by this measure.
Enrollment of 281 puts it in the smaller third of California schools by headcount.
Its Resource Investment Index lands in the lower third of 9,998 scored California schools.
Among 892 similarly sized, similarly resourced-need California schools statewide, it ranks #717, in the lower tier once campus size and economic need are matched.
Its student body is led by Hispanic or Latino (72%) and White (22%) (diversity index 43/100).
Chronic absenteeism is elevated: 34.2% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Sonoma Valley Unified spends $21,339 per pupil, 29% above the California average, a better-resourced district than most.
Among Sonoma's elementary schools, it stands alongside Flowery Elementary (368 students): Sassarini Elementary is smaller than that campus by headcount and runs leaner classes (21.6:1 vs 24.5:1).
Sonoma Valley Unified also operates Sonoma Valley High (1,071 students) and Flowery Elementary (368 students) alongside Sassarini Elementary.
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 Sassarini Elementary compares
Sassarini Elementary on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 21.6:1 | ▲ 0% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 55.4% | ▼ 0% | 55.5% | 51.7% |
| Enrollment | 281 | top 76% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
21.6:1
Leaner classes than 11% of US schools, heavier class loads than most.
281
Bigger than 30% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
55.4%
free-lunch eligible
- 0% 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
21.6:1
students per teacher
- 0% above state mean
Top 49% in California - lower ratio than 51% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
34.2%
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
$21,339
per pupil, district-wide
- above California avg of $16,509
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
0
in-school suspensions + 1 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.4 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 72.2%
White 21.7%
Asian 3.2%
African American 1.4%
Two or More 1.4%
Largest group: Hispanic or Latino at 72.2% of enrollment.
Student-body diversity index 43.0/100
Simpson diversity index - at 43.0, Sassarini Elementary is less mixed than the California school average of 46.0.
Programs
Funding & spending
District-wide per-pupil expenditure for Sonoma Valley Unified, which includes Sassarini Elementary.
$21,339
Per student
+29%
vs California
Avg $16,509
+29%
vs U.S.
Avg $16,593
Revenue mix
Local 74.2%
State 14.7%
Federal 11.2%
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 Sassarini Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Sonoma Valley High | Larger | Lower economic need | Similar S:T ratio |
| Flowery Elementary | Larger | Lower economic need | Higher S:T ratio |
| Adele Harrison Middle | Similar size | Lower economic need | Lower S:T ratio |
| Altimira Middle | Similar size | Similar economic need | Lower S:T ratio |
| El Verano Elementary | Similar size | Similar economic need | Higher S:T ratio |
Comparisons are relative to Sassarini Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,071
- Students per teacher
- 20.6:1
- Resource Index
- 36/100
- 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
- 324
- Students per teacher
- 15.4:1
- Resource Index
- 45/100
- Enrollment
- 314
- Students per teacher
- 26.2:1
- Resource Index
- 7/100
Similar elementary schools in Sonoma
5 comparable elementary schools (grades K-5) serving the same city.
Flowery Elementary
Standard public school
368 students 24.5:1 students per teacher
El Verano Elementary
Standard public school
314 students 26.2:1 students per teacher
Prestwood Elementary
Standard public school
275 students 22.9:1 students per teacher
Woodland Star Charter
Standard public school
244 students 24.4:1 students per teacher
Sonoma Charter
Standard public school
226 students 22.6:1 students per teacher
Similar elementary 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 (~281 students)
Similar student-teacher ratio (~21.6:1)
Next steps
Verify locally before acting on Sassarini Elementary's federal record.
- Compare Sassarini Elementary against another school. Compare schools
- Sonoma Valley 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 Sassarini Elementary
How many students attend Sassarini Elementary?
Sassarini Elementary has 281 students enrolled. It is an elementary school in Sonoma, CA.
What is the student-teacher ratio at Sassarini Elementary?
The student-teacher ratio at Sassarini Elementary is 21.6:1, which is 0% higher than the California average of 21.5:1 and 38% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Sassarini Elementary?
55.4% of students at Sassarini Elementary are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Sassarini Elementary?
The largest demographic group at Sassarini Elementary is Hispanic or Latino at 72.2% of enrollment, in Sonoma, CA.
What is the Resource Investment Index for Sassarini Elementary?
Sassarini Elementary has a Resource Investment Index of 19/100 (lower reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Sassarini Elementary rank among elementary schools in Sonoma?
By Resource Investment Index, Sassarini Elementary ranks #2 of 6 elementary 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 elementary schools in Sonoma on the city page.
Is Sassarini Elementary a good school?
Sassarini Elementary earns 19/100 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 Sonoma Valley Unified?
Besides Sassarini Elementary, 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.
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.