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Elementary · Regular · Grades K to 6

Sonoma Mountain Elementary, Petaluma, CA

Charter schoolSonoma Mountain Elementary is a public elementary school in Petaluma, part of Old Adobe Union. It enrolled 422 students in 2024-25, with 24.8 students per full-time teacher.

Enrollment and teachers

Students
422
Teachers (FTE)
17.0
Students per teacher
24.8
Grades
K to 6

This school's ratio is about the same as the district figure of 24.1. The California average across schools is 21.9. Ratios count all teachers, including specialists, so they are lower than typical class sizes.

This school24.8
District24.1
California21.9
United States15.3

School details

Address
1900 Rainier Cir., Petaluma, CA 94954
Phone
(707)765-4305
District
Old Adobe Union
County
Sonoma County
Level
Elementary
Type
Regular
Status
Open
Charter
Yes
Virtual
No
Locale
City: Small
NCES school ID
062832007455
Location from NCES coordinates. Map data OpenStreetMap contributors. Open larger map

School meals

Counts of students eligible for free or reduced-price lunch, as reported to NCES.
Free lunch
59
Reduced-price lunch
6
Free or reduced-price lunch
6515.4% of enrollment.
Direct certification
54Students certified through programs such as SNAP, without an application.
Community Eligibility Provision
No

Schools in the Community Eligibility Provision (CEP) serve free meals to all students, so their free lunch counts often reflect direct certification or total enrollment. Free and reduced lunch shares are not comparable between CEP and non-CEP schools.

Related schools

Other elementary schools in Old Adobe Union

Elementary schools elsewhere in Petaluma

We publish official enrollment and staffing data, not ratings or test scores.

Source: NCES Common Core of Data 2024-25 and F-33 finance 2020, via the Urban Institute Education Data Portal. Last reviewed October 2026. Blank values are not available, not applicable or suppressed in the source. See the methodology.