Bel Aire Elementary
School pathway
Test scores
CAASPP 2023-24 . % met or exceeded standardWhat this means: On the CAASPP, California's statewide test, about 74 of every 100 students at this school read and write at grade level and about 74 of 100 do math at grade level. Across all California schools, those numbers are about 47 and 36. Reading and writing scores are down about 9 points since 2014, while math scores are down about 7 points.
BeatsExpectations
Demographically-adjusted score · methodologyWhat this means: About 74% of students here test proficient in math and reading, compared with the roughly 75% 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%.
7-year change
SY 2017-18 vs SY 2024-25About Bel Aire Elementary
As a low-enrollment elementary school in Tiburon, California, Bel Aire Elementary caters to 322 students from grades 3 through 5, part of Reed Union Elementary. By comparison, California's public schools average about 465 students each, so Bel Aire Elementary sits 31% below that benchmark.
Reed Union Elementary comprises 3 schools with combined enrollment of 1,043 students; Bel Aire Elementary is among them.
On the student-mix side, Bel Aire Elementary lists that the largest single group is White, at 69% of enrollment. Beyond that, the school reports 11% multiracial, 10% Hispanic, 8% Asian. That composition is broadly in line with Marin County as a whole.
Looking at school resources, Bel Aire Elementary reports 18 full-time-equivalent teachers, putting the student-to-teacher ratio at about 17.7:1. Statewide, the average ratio sits near 22.3:1, putting Bel Aire Elementary tighter than the state norm the norm. About 8% of enrolled students meet the income threshold for free or reduced-price lunch, a number frequently used as a low-income enrollment indicator. Set against Marin County (around 35%), the school's rate is noticeably below typical.
Adjusting for the school's free-and-reduced-lunch share, Bel Aire Elementary tracks the demographic baseline. The model predicts 74.7% given the school's FRL share; actual proficiency is 73.8%.
In the surrounding community, Marin County reports that median household income runs about $149,091, roughly 61% of adults have completed at least a four-year degree, and roughly 4% of residents live below the federal poverty line. In all, Marin County runs 75 public schools (combined enrollment of about 29,867 students), of which Bel Aire Elementary is one.
Nearest neighbor: Strawberry Point Elementary, around 0.7 miles off. Counting just inside five miles, 8 other public schools cluster around Bel Aire Elementary. Among the 9 schools in that immediate cluster with test data (this one included), Bel Aire Elementary ranks 6th on composite proficiency, below the local average of 76.1%.
The campus sits in a residential setting.
Over the past 7-year window. Over the past 7-year window, the student count decreased 36%: 503 students in 2018 compared to 322 in 2025. Over the same period, the White share decreased from 83% to 69%. The student-to-teacher ratio narrowed from 19.2:1 in 2018 to 17.7:1 today.
On the community side, the page collects discussion, questions, and updates around school events, parent volunteer needs, and clubs. Parents, students, alumni, and staff are welcome to weigh in.
Marin County at a glance
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