Las Lomas High

Las Lomas High, a substantial 9-12 campus in Walnut Creek, California, one of the schools within Acalanes Union High, caters to 1,577 students, covering grades 9 through 12. Enrollment runs roughly 88% above the state mean of about 838.

Las Lomas High is one of 5 schools operated by Acalanes Union High, a district that enrolls 5,401 students overall.

In terms of who attends, Las Lomas High records that the largest single group is White at 51%, but no single group is in the majority. Other groups include 17% Asian, 17% Hispanic, 11% multiracial, 3% Black. By comparison, Contra Costa County as a whole is about 41% White, so the school skews considerably more White than its surroundings.

Looking at the economic backdrop, Las Lomas High shows 81 full-time-equivalent teachers, putting the student-to-teacher ratio at about 19.5:1. The state averages around 18.2:1, so this campus is higher than the state norm typical. Roughly 15% of students at Las Lomas High qualify for free or reduced-price lunch, often used as a Title I proxy. Set against Contra Costa County (around 45%), the school's rate is south of typical.

On a demographically-adjusted basis, Las Lomas High tracks the demographic baseline. The model predicts 70.3% given the school's FRL share; actual proficiency is 63.4%.

In the broader community, ACS estimates for Contra Costa County put the typical household earns roughly $127,229 per year, 45% of adults hold a bachelor's degree or higher, and roughly 6% of residents live below the federal poverty line. Las Lomas High is one of 280 public schools in Contra Costa County (combined enrollment of about 167,423 students).

Nearest neighbor: Murwood Elementary, around 0.6 miles off. Within five miles, there are 8 other public schools. Ranking that nearby cluster on reported proficiency puts Las Lomas High at 8th of 8; the average score across the group is 69.2%.

Las Lomas High operates from a city-core location.

Trend over the last 7 years. Looking back 7 years, enrollment at Las Lomas High has stayed largely flat, going from 1,549 students in 2018 to 1,577 in 2025. The White share of enrollment ticked down from 64% to 51% over that span. Class-load math has fell: from 20.5:1 in 2018 to 19.5:1 in 2025.

In the discussion threads here, the feed for Las Lomas High typically covers pickup logistics, teacher feedback, and after-school programs. Parents, students, alumni, and staff are welcome to weigh in.