Monarch Grove Elementary

Monarch Grove Elementary is a compact elementary-level community in Los Osos, California, operated by San Luis Coastal Unified. The school educates 324 students in grades K through 5. By comparison, California's public schools average about 465 students each, so Monarch Grove Elementary sits 30% below that benchmark.

Within San Luis Coastal Unified, which oversees 16 schools and 7,653 students, Monarch Grove Elementary is one campus in the system.

For racial and ethnic makeup, Monarch Grove Elementary logs that the largest single group is White, at 69% of enrollment. The remainder looks like 18% Hispanic, 7% multiracial, 4% Asian. Compared to San Luis Obispo County overall, the school's racial mix sits in roughly the same range.

On the income-and-resources front, On paper, Monarch Grove Elementary has 14 full-time-equivalent teachers, translating to a class-load average of around 23.1:1. That figure is higher than the state norm's 22.3:1 average. About 41% of enrolled students meet the income threshold for free or reduced-price lunch, a number frequently used as a low-income enrollment indicator. By comparison, San Luis Obispo County runs at roughly 54%, so the school's eligibility rate is meaningfully below the surrounding baseline.

After controlling for student poverty, Monarch Grove Elementary ranks in the top 10% of California public schools. The BeatsExpectations model, a per-state regression of composite proficiency on FRL share, predicts schools with this student profile to land around 55.2%; Monarch Grove Elementary posts 76.0%, +20.8 points above that line.

Around the school, ACS estimates for San Luis Obispo County put the typical household earns roughly $97,446 per year, roughly 40% of adults have completed at least a four-year degree, and the poverty rate sits near 6%. Monarch Grove Elementary is one of 83 public schools in San Luis Obispo County (combined enrollment of about 33,339 students).

Baywood Elementary is the nearest neighboring public school, about 1.3 miles from this campus. Counting just inside five miles, 3 other public schools cluster around Monarch Grove Elementary. Ranking that nearby cluster on reported proficiency puts Monarch Grove Elementary at 1st of 6; the average score across the group is 44.7%.

Geographically, the school is in a small-town area.

Over the past 7-year window. Over the past 7-year window, the student count decreased 7%: 347 students in 2018 compared to 324 in 2025.

On this page, members of the Monarch Grove Elementary community share and discuss classroom updates, athletics, and weather closures. Members of the school community can share what they know.