Enrollment
21
High
DISTRICT 499 · STATE 838
SCHOOL COMMUNITY·PETALUMA JOINT UNION HIGH·NCES 063025001788
Sonoma Mountain High (Necessary Small School)
299 Casa Grande Rd., Petaluma, CA 94954 · (707) 778-4738 · Sonoma County
GRADES 09–12HIGH13-CITYTITLE IALTERNATIVE EDUCATION SCHOOL21 STUDENTS
·
allk12 Grade
Not graded
Schools serving specialized populations are not graded, because state test results are not a fair comparison for them. How grades work
Student : Teacher
10.7:1
2 FTE teachers
DISTRICT 13.2:1 · STATE 18.2:1
Free / Reduced Lunch
71%
15 students
DISTRICT 49% · STATE 65%
Community
0
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 3 | 14% |
| Grade 10 | 2 | 10% |
| Grade 11 | 7 | 33% |
| Grade 12 | 9 | 43% |
Student demographics
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
QUIET COMMUNITY
Be the first to start a discussion at Sonoma Mountain High (Necessary Small School).
START A DISCUSSIONBeatsExpectations
Not computed for this schoolBeatsExpectations is not computed for specialized-population schools (schools for the deaf or blind, therapeutic and behavioral-health placements, juvenile-justice and alternative-education settings, and similar). State ELA/Math proficiency rates are not a comparable metric for these populations, so a demographically-adjusted residual against general-enrollment peers would be misleading. About the methodology →
Where Sonoma Mountain High (Necessary Small School) ranks
Among high schools| Measure | This school | In California | In Sonoma County |
|---|---|---|---|
| Enrollment ranked largest first | 21 | #1,929 of 2,093 | #26 of 29 |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
21
-11 (-34%) vs 2020
-32% since 2000-01, when it was 31
Student : Teacher
10.7:1
was 16.0:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 21 | 2 | 10.7:1 | 71% (15) |
| 2023-24 | 24 | 2.2 | 10.8:1 | 63% (15) |
| 2022-23 | 23 | 2 | 11.6:1 | 61% (14) |
| 2020-21 | 32 | 2 | 16.0:1 | 47% (15) |
| 2017-18 | 21 | 2 | 10.5:1 | 52% (11) |
| 2015-16 | 28 | 2 | 14.0:1 | 71% (20) |
| 2010-11 | 26 | N/A | N/A | 50% (13) |
| 2000-01 | 31 | 2 | 15.5:1 | 0% (0) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Sonoma Mountain High (Necessary Small School).
Since 2017-18: students unchanged (21 to 21); teachers down 2% (2 to 2).
About Sonoma Mountain High (Necessary Small School)
Sonoma Mountain High (Necessary Small School) is a very small high school in Petaluma Joint Union High, located in Petaluma, California. It offers grades 9 through 12 and has 21 students enrolled. High schools in California have about 838 students on average; enrollment here is 97% lower.
Petaluma Joint Union High has 4,900 students in 11 schools, and Sonoma Mountain High (Necessary Small School) is one of those schools.
More than half of the students at Sonoma Mountain High (Necessary Small School) are White (76%). The rest of enrollment is 19% Hispanic and 5% multiracial. Census estimates put the White share of Sonoma County's population at about 62%.
Its ratio of 10.7:1 is based on 2 full-time-equivalent teachers. The average for high schools in California is 18.2:1, so this school has fewer students per teacher. In all, 71% of students qualify for free or reduced-price lunch. Across public schools in Sonoma County, the average is 51%.
Sonoma County is the school's county. There, median household income comes to about $104,674, the share of adults with a bachelor's degree or higher is 39%, and about 5% of people live in poverty. Sonoma County's 184 public schools enroll about 63,389 students and include Sonoma Mountain High (Necessary Small School).
Sonoma Mountain High (Necessary Small School) is about 0.1 miles from Casa Grande High, its nearest public school. Sonoma Mountain High (Necessary Small School) has at least 8 other public schools within five miles.
The school is inside a principal city with a population under 100,000, according to its NCES locale (City: Small).
The 2020-21-to-2024-25 change in enrollment was a 34% decline, from 32 to 21. The ratio was 16.0:1 in 2020-21 and 10.7:1 in 2024-25.
The discussion board for Sonoma Mountain High (Necessary Small School) is open to topics like athletics, class schedules, and weather closures. Parents, students, alumni, and staff are welcome to post.
Sonoma County at a glance
View full county profilePopulation
485,040
Census ACS
Median income
$104,674
Household, ACS
Bachelor's+
39%
Adults 25+
Poverty rate
5%
Below federal line
Schools in county
184
63,389 students
Quick facts
Related schools
Other schools in Petaluma Joint Union High
- Casa Grande HighHigh · 1,653 students
- Petaluma HighHigh · 1,193 students
- Kenilworth Junior HighMiddle · 812 students
- Mary Collins Charter School at Cherry ValleyElementary · 494 students
- Petaluma Junior HighMiddle · 454 students
- Petaluma Accelerated CharterMiddle · 115 students
Other schools in Petaluma
- Casa Grande HighHigh · 1,653 students
- Petaluma HighHigh · 1,193 students
- Kenilworth Junior HighMiddle · 812 students
- Heartwood CharterCombined · 739 students
- Mary Collins Charter School at Cherry ValleyElementary · 494 students
- Petaluma Junior HighMiddle · 454 students
Nearby schools
- Casa Grande High0.1 mi · 1,653
- La Tercera Elementary0.6 mi · 295
- Miwok Valley Elementary Charter0.8 mi · 288
- McDowell Elementary1.2 mi · 329
- Dual Language Immersion Academy Charter1.2 mi · 31
- River Montessori Elementary Charter1.2 mi · 144
Frequently asked questions
About Sonoma Mountain High (Necessary Small School)How large is Sonoma Mountain High (Necessary Small School)?
Sonoma Mountain High (Necessary Small School) enrolls approximately 21 students in grades 09-12.
Is Sonoma Mountain High (Necessary Small School) an elementary, middle, or high school?
Sonoma Mountain High (Necessary Small School) is a high school covering grades 09-12.
How many students per teacher at Sonoma Mountain High (Necessary Small School)?
Approximately 10.7:1 students per teacher at Sonoma Mountain High (Necessary Small School).
How diverse is Sonoma Mountain High (Necessary Small School)?
Sonoma Mountain High (Necessary Small School) reports a student body of 76% White, 19% Hispanic, 5% Two or more.
What district is Sonoma Mountain High (Necessary Small School) in?
Sonoma Mountain High (Necessary Small School) is part of Petaluma Joint Union High.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.