High · Alternative · Grades 9 to 12
Sonoma Mountain High (Necessary Small School), Petaluma, CA
Enrollment and teachers
- Students
- 21
- Teachers (FTE)
- 1.0
- Students per teacher
- 21.0
- Grades
- 9 to 12
This school's ratio is about the same as the district figure of 20.7. The California average across schools is 21.9. Ratios count all teachers, including specialists, so they are lower than typical class sizes.
School details
- Address
- 299 Casa Grande Rd., Petaluma, CA 94954
- Phone
- (707)778-4738
- District
- Petaluma Joint Union High
- County
- Sonoma County
- Level
- High
- Type
- Alternative
- Status
- Open
- Charter
- No
- Virtual
- No
- Locale
- City: Small
- NCES school ID
- 063025001788
School meals
- Free lunch
- 11
- Reduced-price lunch
- 4
- Free or reduced-price lunch
- 1571.4% of enrollment.
- Direct certification
- 8Students certified through programs such as SNAP, without an application.
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 high schools in Petaluma Joint Union High
- Casa Grande High 1,653 students
- Petaluma High 1,193 students
- San Antonio High (Continuation) 65 students
- Valley Oaks High (Alternative) 43 students
- Carpe Diem High (Continuation) 19 students
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.