Elementary school (grades K-5) · Petaluma, CA
Two Rock Elementary
Federal NCES profile for Two Rock Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 26/100.
The verdict
Two Rock Elementary earns 26/100 on the Resource Investment Index, with class sizes near the California median.
- #21 of 25
- elementary schools in Petaluma · Resource Index
- 26
- Resource Index · Lower
- 22.5:1
- students per teacher
- 32.6%
- free-lunch eligible
Two Rock Elementary has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Two Rock Elementary ranks #21 of 25 elementary schools in Petaluma, CA.
School address
NCES ID 064026006654 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-7 students YoY
Two Rock Elementary shrank from 132 students in 2022-23 to 125 in 2023-24 (-5.3%).
Teacher FTE added 6.0 → 7.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Shrinking CCD campus
-7 students YoY 064026006654 · Petaluma, CA Elementary · SMALL · TRAD
135 enr · 22.5:1 · 32.6% lunch · RII 26
Nearest enrollment peer: Sheridan Elem School (135 students)
Two Rock Elementary shrank from 132 students in 2022-23 to 125 in 2023-24 (-5.3%). Teacher FTE added 6.0 → 7.0 across the same CCD years. Read with this school → · District book → · California schools → · Find another →
How Two Rock Elementary compares
Two Rock Elementary 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 | 22.5:1 | ▲ 5% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 32.6% | ▼ 41% | 55.5% | 51.7% |
| Enrollment | 135 | top 87% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
Equity indicators methodology
Student demographics
Largest group: Hispanic or Latino at 52.6% of enrollment.
Simpson diversity index - at 59.1, Two Rock Elementary is more mixed than the California school average of 46.0.
Programs
District finance for Two Rock Union reports $16,429 per pupil (NCES F-33) - open the district page for the full revenue mix.
Similar elementary schools in Petaluma
6 comparable elementary schools (grades K-5) serving the same city.
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 (~135 students)
Frequently asked questions about Two Rock Elementary
How many students attend Two Rock Elementary?
Two Rock Elementary has 135 students enrolled. It is an elementary school in Petaluma, CA. CCD year-over-year: 132 (2022-23) → 125 (2023-24), down 7.
What is the student-teacher ratio at Two Rock Elementary?
The student-teacher ratio at Two Rock Elementary is 22.5:1, which is 5% higher than the California average of 21.5:1 and 43% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Two Rock Elementary?
32.6% of students at Two Rock Elementary are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Two Rock Elementary?
The largest demographic group at Two Rock Elementary is Hispanic or Latino at 52.6% of enrollment, in Petaluma, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 59.1/100.
What is the Resource Investment Index for Two Rock Elementary?
Two Rock Elementary has a Resource Investment Index of 26/100 (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 Two Rock Elementary rank among elementary schools in Petaluma?
By Resource Investment Index, Two Rock Elementary ranks #21 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 Two Rock Union?
None reported; Two Rock Union operates only Two Rock Elementary as a public school district in NCES's records.