Enrollment
278
Elementary
DISTRICT 270 · STATE 465
SCHOOL COMMUNITY·ROSS VALLEY ELEMENTARY·NCES 060000608775
Brookside Elementary
116 Butterfield Rd., San Anselmo, CA 94960 · (415) 453-2948 · Marin County
GRADES KG–05ELEMENTARY21-SUBURBREGULAR SCHOOL278 STUDENTS
B+
allk12 Grade
Scored higher than 65% of California public elementary schools
- ATest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- C+Beats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- CThree-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 elementary schools
Student : Teacher
19.6:1
14 FTE teachers
DISTRICT 21.5:1 · STATE 22.3:1
Free / Reduced Lunch
10%
29 students
DISTRICT 10% · STATE 65%
Community
0
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Kindergarten | 66 | 24% |
| Grade 1 | 38 | 14% |
| Grade 2 | 30 | 11% |
| Grade 3 | 51 | 18% |
| Grade 4 | 39 | 14% |
| Grade 5 | 54 | 19% |
This year's kindergarten class (66) is 22% larger than its 5th grade class (54).
Student demographics
44%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 46% · 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
School pathway
Students here typically continue to
Brookside Elementary→White Hill Middle
Based on grade levels within Ross Valley Elementary. Attendance zones can vary; confirm enrollment with the district.
Test scores
CAASPP 2024-25 . % met or exceeded standardEnglish Language Arts
72.3%
CA avg 49.1% . -10.7pp since 2014
Math
70.2%
CA avg 37.7% . -6.8pp since 2014
What this means: On the CAASPP, California's statewide test, about 72 of every 100 students at this school read and write at grade level and about 70 of 100 do math at grade level. Across all California schools, those numbers are about 49 and 38. Reading and writing scores are down about 11 points since 2014, while math scores are down about 7 points.
Performance levels, 2024-25
| Subject | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| English Language Arts | 51.1% | 21.3% | 14.9% | 12.8% |
| Math | 39.0% | 31.2% | 9.9% | 19.9% |
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 | 72.3% | 70.2% |
| 2023-24 | 74.3% | 68.9% |
| 2022-23 | 72.7% | 71.1% |
| 2021-22 | 72.6% | 73.3% |
| 2020-21 | 63.4% | 63.7% |
| 2018-19 | 79.3% | 72.7% |
| 2017-18 | 87.8% | 82.2% |
| 2016-17 | 88.4% | 80.3% |
| 2015-16 | 90.0% | 87.0% |
| 2014-15 | 83.0% | 77.0% |
% 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
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
71.7%
composite math + reading, all grades
Predicted
73.4%
based on CA schools with similar FRL share
Beats by
-1.7pp
below demographic expectation
What this means: About 72% of students here test proficient in math and reading, compared with the roughly 73% typical for California schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among California's top nor bottom 10%.
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 Brookside Elementary
Brookside Elementary's state test result (71.7% proficient) is higher than 0 of the 3 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Brookside Elementary this school | 278 | 10.4% | 71.7% |
| Hidden Valley Elementary San Anselmo | 274 | 8.4% | 80.8% |
| Wade Thomas Elementary San Anselmo | 292 | 7.2% | 82.2% |
| Cardiff Elementary Cardiff-by-the-Sea | 259 | 11.2% | N/A |
| The Heights Charter Alpine | 283 | 13.4% | N/A |
| Cypress Elementary Newbury Park | 325 | 14.2% | 75.7% |
Matched among California elementary 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 Brookside Elementary ranks
Among elementary schools| Measure | This school | In California | In Marin County |
|---|---|---|---|
| State test proficiency ranked highest first | 71.7% | #573 of 5,151 | #15 of 34 |
| Math proficiency ranked highest first | 70.2% | #592 of 5,172 ▲ 70 | #15 of 35 no change |
| Reading proficiency ranked highest first | 72.3% | #635 of 5,172 ▼ 142 | #16 of 35 ▼ 6 |
| 3-year test score change ranked biggest drop first | -1.7pp | #1,288 of 5,116 | #8 of 35 |
| Enrollment ranked largest first | 278 | #4,933 of 5,915 | #27 of 44 |
| Students per teacher ranked fewest first | 19.6:1 | #748 of 5,352 | #8 of 35 |
| Diversity index ranked most diverse first | 43.6% | #3,213 of 5,354 | #25 of 35 |
| Free and reduced lunch ranked highest share first | 10.4% | #5,458 of 5,625 | #25 of 37 |
| Enrollment change since 2017-18 ranked steepest decline first | -13.1% | #2,268 of 3,837 | #15 of 26 |
Ranked against other public elementary 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
278
-14 (-5%) vs 2020
-44% since 1990-91, when it was 497
Student : Teacher
19.6:1
was 18.3:1
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 | 278 | 14.2 | 19.6:1 | 10% (29) |
| 2023-24 | 293 | 14 | 20.9:1 | 10% (30) |
| 2022-23 | 281 | 13 | 21.6:1 | 8% (22) |
| 2020-21 | 292 | 16 | 18.3:1 | 6% (17) |
| 2017-18 | 320 | 14.4 | 22.2:1 | 9% (29) |
| 2015-16 | 369 | 16 | 23.1:1 | 7% (26) |
| 2010-11 | 708 | N/A | N/A | 5% (37) |
| 2000-01 | 530 | 28 | 18.9:1 | 2% (13) |
| 1990-91 | 497 | 21 | 23.7:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Brookside Elementary.
Since 2017-18: students down 13% (320 to 278); teachers down 1% (14.4 to 14.2).
About Brookside Elementary
Brookside Elementary is a low-enrollment elementary school that serves part of San Anselmo, California. There are 278 students enrolled, covering kindergarten through 5. That puts enrollment 40% below the 465-student average for elementary schools in California.
Ross Valley Elementary includes 5 schools. Together they enroll 1,679 students.
Of every 100 students at Brookside Elementary, about 73 are White. After that, the student body is 14% Hispanic and 10% multiracial. The diversity index for Brookside Elementary is 44%. For US public schools as a whole it is 70%.
The school's 14.2 full-time-equivalent teachers translate to a student-to-teacher ratio of 19.6:1. Elementary schools in California average 22.3:1, 2.7 more students per teacher than here. Income data for the school show 10% of students eligible for free or reduced-price lunch. The rate at public schools in Marin County averages 35%, higher than here.
Among California public elementary schools, Brookside Elementary outscored 65%, which works out to a B+ on the allk12 Grade.
On BeatsExpectations, Brookside Elementary is 1.7 points below its prediction, a result in the middle 80% of California schools.
Census data for Marin County show median household income comes to about $149,091, about 61% of adults have at least a bachelor's degree, and roughly 4% of residents are in poverty. There are 75 public schools in the county, enrolling about 29,867, Brookside Elementary among them.
Brookside Elementary's closest public school neighbor is Archie Williams High, about 0.5 miles away. The five-mile area around Brookside Elementary holds at least 8 other public schools. Local comparison: Brookside Elementary ranks 5th of 8 nearby schools, at 71.7% versus a 69.3% average.
Brookside Elementary falls in the Suburb: Large locale category, used for schools in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
From 2020-21 to 2024-25, enrollment decreased from 292 to 278, a 5% decline. Federal data show the ratio rising from 18.3:1 to 19.6:1.
This community page is for conversations about athletics, class schedules, and weather closures. You can also rate the school on this page.
Marin County at a glance
View full county profilePopulation
257,969
Census ACS
Median income
$149,091
Household, ACS
Bachelor's+
61%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
75
29,867 students
Quick facts
Related schools
Other schools in Ross Valley Elementary
- White Hill MiddleMiddle · 601 students
- Wade Thomas ElementaryElementary · 292 students
- Hidden Valley ElementaryElementary · 274 students
- Manor ElementaryElementary · 234 students
Other schools in San Anselmo
- Archie Williams HighHigh · 1,141 students
- Wade Thomas ElementaryElementary · 292 students
- Hidden Valley ElementaryElementary · 274 students
Other Brookside Elementary schools
17 other US public schools in 12 states are named Brookside Elementary. Brookside Elementary is the 15th largest of the 18.
- Brookside ElementaryBeaumont, CA · 691 students
- Brookside ElementaryOak Park, CA · 556 students
- Brookside ElementaryWillits, CA · 350 students
- Brookside ElementaryRAMSEY, MN · 779 students
- Brookside Elementary SchoolNicholasville, KY · 515 students
Nearby schools
- Archie Williams High0.5 mi · 1,141
- Ross Valley Charter0.8 mi · 198
- Hidden Valley Elementary1.0 mi · 274
- Manor Elementary1.1 mi · 234
- Terra Linda High1.3 mi · 1,248
- Sun Valley Elementary1.4 mi · 523
Frequently asked questions
About Brookside ElementaryHow large is Brookside Elementary?
Brookside Elementary enrolls approximately 278 students in grades KG-05.
What grades does Brookside Elementary serve?
Brookside Elementary serves grades KG-05.
What is the student-teacher ratio at Brookside Elementary?
The student-to-teacher ratio at Brookside Elementary is approximately 19.6:1 (14 FTE teachers).
How diverse is Brookside Elementary?
Brookside Elementary reports a student body of 73% White, 14% Hispanic, 1% Black, 2% Asian, 10% Two or more.
Is Brookside Elementary public or private?
Brookside Elementary is a public K-12 school, overseen by Ross Valley Elementary.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.