Enrollment
324
Middle
DISTRICT 329 · STATE 659
SCHOOL COMMUNITY·SONOMA VALLEY UNIFIED·NCES 063720006298
Altimira Middle
17805 Arnold Dr., Sonoma, CA 95476 · (707) 935-6020 · Sonoma County
GRADES 06–08MIDDLE31-TOWNTITLE IREGULAR SCHOOL324 STUDENTS
D
allk12 Grade
Scored higher than 10% of California public middle schools
- DTest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- FBeats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- B+Three-year trend Change in reading and math proficiency over the last three test years.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded California public middle schools
Student : Teacher
16.2:1
20 FTE teachers
DISTRICT 16.8:1 · STATE 20.7:1
Free / Reduced Lunch
42%
137 students
DISTRICT 39% · STATE 65%
Community
0
0 members
Enrollment and student:teacher ratio compared against other middle schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 6 | 99 | 31% |
| Grade 7 | 107 | 33% |
| Grade 8 | 118 | 36% |
Student demographics
28%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 45% · STATE 62% · US 70%
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
Test scores
CAASPP 2024-25 . % met or exceeded standardEnglish Language Arts
29.4%
CA avg 49.1% . +1.4pp since 2014
Math
13.6%
CA avg 37.7% . -2.4pp since 2014
What this means: On the CAASPP, California's statewide test, about 29 of every 100 students at this school read and write at grade level and about 14 of 100 do math at grade level. Across all California schools, those numbers are about 49 and 38. Reading and writing scores are up about 1 points since 2014, while math scores are down about 2 points.
Performance levels, 2024-25
| Subject | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| English Language Arts | 2.3% | 27.1% | 27.1% | 43.5% |
| Math | 3.3% | 10.4% | 25.6% | 60.7% |
Share of tested students at each CAASPP level. Each student counts in one level, so a row adds to about 100%.
CAASPP results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 29.4% | 13.6% |
| 2023-24 | 28.4% | 8.1% |
| 2022-23 | 27.2% | 9.0% |
| 2021-22 | 26.7% | 7.3% |
| 2018-19 | 37.5% | 20.4% |
| 2017-18 | 40.7% | 20.6% |
| 2016-17 | 41.3% | 21.6% |
| 2015-16 | 41.0% | 23.0% |
| 2014-15 | 28.0% | 16.0% |
% met or exceeded standard, all students and all tested grades.
Source: CAASPP. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
UNDERPERFORMING
Bottom 10% of CA schools after controlling for student poverty
Actual proficiency
19.9%
composite math + reading, all grades
Predicted
54.8%
based on CA schools with similar FRL share
Beats by
-34.9pp
below demographic expectation
What this means: About 20% of students here test proficient in math and reading, below the roughly 55% typical for California schools with a similar share of low-income students. BeatsExpectations compares each school with others at the same poverty level, not by raw scores, so a school lands here when its results trail those comparable schools, which is not the same as having low scores. A higher-scoring school can still fall in this tier if similar schools score higher still.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Altimira Middle
Altimira Middle's state test result (19.9% proficient) is higher than 0 of the 3 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Altimira Middle this school | 324 | 42.3% | 19.9% |
| Helen Keller Middle Long Beach | 515 | 40.8% | 59.5% |
| Oak Grove Middle Jamul | 215 | 39.1% | 26.3% |
| High Tech Middle Chula Vista Chula Vista | 335 | 49.6% | N/A |
| Mammoth Middle Mammoth Lakes | 243 | 47.3% | 38.3% |
| High Tech Middle San Diego | 324 | 43.8% | N/A |
Matched among California middle schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Altimira Middle ranks
Among middle schools| Measure | This school | In California | In Sonoma County |
|---|---|---|---|
| State test proficiency ranked highest first | 19.9% | #1,053 of 1,224 | #18 of 21 |
| Math proficiency ranked highest first | 13.6% | #1,049 of 1,227 ▲ 107 | #17 of 21 ▲ 3 |
| Reading proficiency ranked highest first | 29.4% | #1,005 of 1,227 ▼ 38 | #16 of 21 no change |
| 3-year test score change ranked biggest gain first | +4.5pp | #352 of 1,214 | #4 of 21 |
| Enrollment ranked largest first | 324 | #1,172 of 1,377 | #13 of 23 |
| Students per teacher ranked fewest first | 16.2:1 | #65 of 1,279 | #2 of 18 |
| Diversity index ranked most diverse first | 28.3% | #963 of 1,278 | #18 of 18 |
| Free and reduced lunch ranked highest share first | 42.3% | #1,023 of 1,329 | #12 of 22 |
| Enrollment change since 2017-18 ranked steepest decline first | -34.9% | #61 of 930 | #1 of 15 |
Ranked against other public middle 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
324
-110 (-25%) vs 2020
-48% since 1990-91, when it was 628
Student : Teacher
16.2:1
was 17.4:1
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 | 324 | 20 | 16.2:1 | 42% (137) |
| 2023-24 | 351 | 21.6 | 16.3:1 | 68% (240) |
| 2022-23 | 392 | 21.9 | 17.9:1 | 53% (207) |
| 2020-21 | 434 | 25 | 17.4:1 | 61% (264) |
| 2017-18 | 498 | 27.7 | 18.0:1 | 74% (371) |
| 2015-16 | 557 | 29 | 19.2:1 | 73% (405) |
| 2010-11 | 467 | N/A | N/A | 68% (316) |
| 2000-01 | 1,125 | 49 | 23.0:1 | 29% (327) |
| 1990-91 | 628 | 29 | 21.7:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Altimira Middle.
Since 2017-18: students down 35% (498 to 324); teachers down 28% (27.7 to 20).
About Altimira Middle
Located in Sonoma, California, Altimira Middle is a small middle school. The school serves grades 6 through 8. Enrollment is 324 students. It has 51% fewer students than the average for middle schools in California (about 659).
Sonoma Valley Unified enrolls 3,015 students in 8 schools, including Altimira Middle.
Altimira Middle is 83% Hispanic by enrollment. The next largest groups are 15% White. In Sonoma County overall, about 30% of residents are Hispanic. Measured by the diversity index, the student body scores 28%.
The school had 20 full-time-equivalent teachers in 2024-25. Its student-to-teacher ratio is 16.2:1. By comparison, the average for middle schools in California is 20.7:1. The school reported 42% of students eligible for free or reduced-price lunch in 2024-25. The 51% average for public schools in Sonoma County is 9 points higher.
On the allk12 Grade, Altimira Middle lands at D, ahead of 10% of California public middle schools.
Altimira Middle falls short of its prediction by 34.9 points. The model expects 54.8% for a school with its free or reduced-price lunch share in California; the school's rate is 19.9%.
In Sonoma County, home to about 485,040 people, median household income comes to about $104,674, the share of adults with a bachelor's degree or higher is 39%, and roughly 5% of residents are in poverty. There are 184 public schools in the county, enrolling about 63,389, Altimira Middle among them.
Measured in a straight line, Flowery Elementary is about 0.7 miles from Altimira Middle. Within five miles are at least 8 other public schools. Among its closest neighbors with test data, Altimira Middle is 7th of 7 on proficiency.
Altimira Middle is coded as Town: Fringe in federal locale data.
The school's enrollment fell 25% from 2020-21 to 2024-25. Federal data show the ratio falling from 17.4:1 to 16.2:1.
You can use this page to share news and ask questions about fundraisers, report cards, and school supplies. You can also rate the school on this page.
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 Sonoma Valley Unified
- Sonoma Valley HighHigh · 1,071 students
- Flowery ElementaryElementary · 368 students
- Adele Harrison MiddleMiddle · 334 students
- El Verano ElementaryElementary · 314 students
- Sassarini ElementaryElementary · 281 students
- Prestwood ElementaryElementary · 275 students
Other schools in Sonoma
- Sonoma Valley HighHigh · 1,071 students
- Flowery ElementaryElementary · 368 students
- Adele Harrison MiddleMiddle · 334 students
- El Verano ElementaryElementary · 314 students
- Sassarini ElementaryElementary · 281 students
- Prestwood ElementaryElementary · 275 students
Nearby schools
- Flowery Elementary0.7 mi · 368
- El Verano Elementary0.8 mi · 314
- Sonoma Charter0.9 mi · 226
- Sassarini Elementary2.2 mi · 281
- Sonoma Valley High3.0 mi · 1,071
- Creekside High3.1 mi · 48
Frequently asked questions
About Altimira MiddleHow many students attend Altimira Middle?
Altimira Middle enrolls approximately 324 students in grades 06-08.
What grades does Altimira Middle serve?
Altimira Middle serves grades 06-08.
What is the student-teacher ratio at Altimira Middle?
The student-to-teacher ratio at Altimira Middle is approximately 16.2:1 (20 FTE teachers).
What is the racial breakdown of students at Altimira Middle?
At Altimira Middle, the student body is approximately 15% White, 83% Hispanic, 0% Asian, 1% Two or more.
Is Altimira Middle public or private?
Altimira Middle is a public K-12 school, overseen by Sonoma Valley Unified.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.