- Enrollment
- 451
- Students per teacher
- 22.6:1
- Resource Index
- 24/100
Elementary school (grades K-5) · Petaluma, CA
La Tercera Elementary
Federal NCES profile for La Tercera Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 29/100.
2024-25 NCES dataElementary school (grades K-5)NCES 062832004384
👥 S:T ratio 9
🌟 Gifted program 30
🎓 Counselors 58
📋 Attendance 19
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
La Tercera Elementary earns 29/100 on the Resource Investment Index, with class sizes near the California median.
- #20 of 25
- elementary schools in Petaluma · Resource Index
- 29
- Resource Index · Lower
- 22.7:1
- students per teacher
- 33.2%
- free-lunch eligible
La Tercera Elementary has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, La Tercera Elementary ranks #20 of 25 elementary schools in Petaluma, CA.
School address
District: Old Adobe Union · California
NCES ID 062832004384 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-12 students YoY
La Tercera Elementary held near 313 students from 2022-23 to 2023-24 (-12 headcount).
Teacher FTE added 13.0 → 13.4 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-12 students YoY 062832004384 · Petaluma, CA Elementary · SMALL · TRAD
295 enr · 22.7:1 · 33.2% lunch · RII 29
Nearest enrollment peer: Loma Vista Immersion Academy (451 students)
La Tercera Elementary held near 313 students from 2022-23 to 2023-24 (-12 headcount). Teacher FTE added 13.0 → 13.4 across the same CCD years. Read with this school → · District book → · California schools → · Find another →
La Tercera Elementary in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Loma Vista Imm
Loma Vista Immersion Academy
451 students
- Sonoma Mountai
Sonoma Mountain Elementary
422 students
- This school
La Tercera Elementary
295 students
- Miwok Valley E
Miwok Valley Elementary Charter
288 students
- Old Adobe Elem
Old Adobe Elementary Charter
278 students
What this shows La Tercera Elementary reports 295 students on the CCD universe file.
How La Tercera Elementary compares
La Tercera 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 | 22.7:1 | ▲ 6% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 33.2% | ▼ 40% | 55.5% | 51.7% |
| Enrollment | 295 | top 74% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
22.7:1
Leaner classes than 9% of US schools, heavier class loads than most.
295
Bigger than 32% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
33.2%
free-lunch eligible
- 40% below the California average of 55.5%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
22.7:1
students per teacher
- 6% above state mean
Top 59% in California - lower ratio than 41% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
32.2%
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
$16,647
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
Counselors1.4 FTE
Per 211 students, the combined health-and-guidance staffing load for this school.
Discipline context
10
in-school suspensions + 10 out-of-school
Suspension rate: 3.4 per 100 students. Combined in-school and out-of-school rate: 6.8 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 53.2%
Hispanic or Latino 36.3%
Two or More 4.1%
African American 2.7%
Asian 2.4%
American Indian / Alaska Native 0.7%
Native Hawaiian / Pacific Islander 0.7%
Largest group: White at 53.2% of enrollment.
Student-body diversity index 58.2/100
Simpson diversity index - at 58.2, La Tercera Elementary is more mixed than the California school average of 46.0.
Programs
District finance for Old Adobe Union reports $16,647 per pupil (NCES F-33) - open the district page for the full revenue mix.
How La Tercera Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Loma Vista Immersion Academy | Larger | Similar economic need | Similar S:T ratio |
| Sonoma Mountain Elementary | Larger | Lower economic need | Higher S:T ratio |
| Miwok Valley Elementary Charter | Similar size | Higher economic need | Lower S:T ratio |
| Old Adobe Elementary Charter | Similar size | Lower economic need | Similar S:T ratio |
Comparisons are relative to La Tercera Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 422
- Students per teacher
- 26.4:1
- Resource Index
- 33/100
- Enrollment
- 288
- Students per teacher
- 19.2:1
- Resource Index
- 36/100
- Enrollment
- 278
- Students per teacher
- 23.2:1
- Resource Index
- 33/100
Similar elementary schools in Petaluma
6 comparable elementary schools (grades K-5) serving the same city.
Mary Collins Charter School at Cherry Valley
Standard public school
494 students 29.1:1 students per teacher
Loma Vista Immersion Academy
Standard public school
451 students 22.6:1 students per teacher
Sonoma Mountain Elementary
Standard public school
422 students 26.4:1 students per teacher
Corona Creek Elementary
Standard public school
403 students 22.4:1 students per teacher
Grant Elementary
Standard public school
386 students 24.1:1 students per teacher
Meadow Elementary
Standard public school
384 students 24:1 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 (~295 students)
Frequently asked questions about La Tercera Elementary
How many students attend La Tercera Elementary?
La Tercera Elementary has 295 students enrolled. It is an elementary school in Petaluma, CA. CCD year-over-year: 325 (2022-23) → 313 (2023-24), nearly flat (-12).
What is the student-teacher ratio at La Tercera Elementary?
The student-teacher ratio at La Tercera Elementary is 22.7:1, which is 6% higher than the California average of 21.5:1 and 45% higher than the national average of 15.7:1.
What percentage of students receive free lunch at La Tercera Elementary?
33.2% of students at La Tercera Elementary are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of La Tercera Elementary?
The largest demographic group at La Tercera Elementary is White at 53.2% of enrollment, in Petaluma, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 58.2/100.
What is the Resource Investment Index for La Tercera Elementary?
La Tercera Elementary has a Resource Investment Index of 29/100 (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 La Tercera Elementary rank among elementary schools in Petaluma?
By Resource Investment Index, La Tercera Elementary ranks #20 of 25 elementary schools in Petaluma, 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 Petaluma on the city page.
What other schools are in Old Adobe Union?
Besides La Tercera Elementary, Old Adobe Union also operates Loma Vista Immersion Academy (451 students), Sonoma Mountain Elementary (422 students), and Miwok Valley Elementary Charter (288 students). See the Old Adobe Union district page for the complete list.