Branch Elementary
Test scores
CAASPP 2024-25 . % met or exceeded standardWhat this means: On the CAASPP, California's statewide test, about 81 of every 100 students at this school read and write at grade level and about 73 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 18 points since 2014, while math scores are up about 15 points.
BeatsExpectations
Demographically-adjusted score · methodologyWhat this means: About 74% of students here test proficient in math and reading, well above the roughly 59% typical for California schools with a similar share of low-income students. BeatsExpectations ranks schools against others at the same poverty level, not by raw scores, so a school can post high scores and still fall short of its prediction, or post lower scores and still beat it. This school clears its prediction by about 15 points, placing it in California's top 10%.
7-year change
SY 2017-18 vs SY 2024-25About Branch Elementary
Set in Arroyo Grande, California, Branch Elementary is a low-enrollment elementary-level community, operated by Lucia Mar Unified. It teaches 261 students across grades K through 6. That puts it 44% below the typical public school in California, which averages around 465 students.
Within Lucia Mar Unified, which oversees 19 schools and 9,590 students, Branch Elementary is one campus in the system.
On demographics, Branch Elementary records that the largest single group is White, at 59% of enrollment. Beyond that, the school logs 28% Hispanic, 11% multiracial. By comparison, San Luis Obispo County as a whole is about 69% White, so the school skews noticeably less White than its surroundings.
On the resource side, Staff filings list 13 full-time-equivalent teachers, which works out to roughly 20.4:1 students per teacher. The state averages around 22.3:1, so this campus is tighter than the state norm typical. About 35% 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 San Luis Obispo County (around 54%), the school's rate is somewhat below typical.
On a demographically-adjusted basis, Branch Elementary is in the OUTPERFORMING tier of the BeatsExpectations model, which fits a per-state line through proficiency and FRL share. Schools with this campus's poverty mix typically land near 58.9%; this one delivers 74.2%, a residual of +15.3 points.
In the surrounding community, ACS estimates for San Luis Obispo County put median household income runs about $97,446, roughly 40% of adults have completed at least a four-year degree, and roughly 6% of residents live below the federal poverty line. In all, San Luis Obispo County runs 83 public schools (combined enrollment of about 33,339 students), of which Branch Elementary is one.
The closest other public school is Paulding Middle, roughly 2.7 miles away. Within five miles, there are 5 other public schools. On composite proficiency, Branch Elementary comes 1st of 9 in the immediate cluster, higher than the nearby-schools average of 46.5%.
Branch Elementary operates from an outlying location.
Over the past 7-year window. Over the past 7-year window, the student count shrank 19%: 321 students in 2018 compared to 261 in 2025. White enrollment moved from 74% to 59% across the same window. Class-load math has fell: from 22.9:1 in 2018 to 20.4:1 in 2025.
On this page, members of the Branch Elementary community share and discuss pickup logistics, teacher feedback, and after-school programs. Parents, students, alumni, and staff are welcome to weigh in.
San Luis Obispo County at a glance
View full county profileQuick facts
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