Williamsville High School

Set in Williamsville, Illinois, Williamsville High School is a small 9-12 campus, run under Williamsville CUSD 15. It works with 462 students across grades 9 through 12. Compared to the state average of about 834 students per school, that is 45% leaner than typical.

Williamsville High School is one of 3 schools operated by Williamsville CUSD 15, a district that enrolls 1,458 students overall.

Looking at the student body, Williamsville High School shows that the student body is overwhelmingly White (92%). The remainder reads as 4% multiracial. By comparison, Sangamon County as a whole is about 78% White, so the school skews visibly more White than its surroundings.

Looking at school resources, On paper, Williamsville High School has 33 full-time-equivalent teachers, translating to a class-load average of around 14.0:1. The state averages about 13.8:1, putting this campus right in line with peers. About 18% 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, Sangamon County runs at roughly 48%, so the school's eligibility rate is below the surrounding baseline.

With demographic context factored in, Williamsville High School performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 61.0%, the actual is 55.1%, a residual of -5.9 points.

Zooming out to the county, Sangamon County reports that the typical household earns roughly $75,357 per year, 37% of adults hold a bachelor's degree or higher, and census figures put the poverty rate at about 9%. Across Sangamon County's 77 public schools (combined enrollment of about 27,345 students), Williamsville High School is one campus in the mix.

The closest other public school is Williamsville Jr High School, roughly 0.2 miles away. 2 of the 8 nearest public schools sit inside a five-mile radius. On composite proficiency, Williamsville High School comes 5th of 9 in the immediate cluster, higher than the nearby-schools average of 47.6%.

The campus sits in a suburban setting.

Looking at the recent track record. Looking back 7 years, enrollment at Williamsville High School has stayed largely flat, going from 467 students in 2018 to 462 in 2025.

Inside the community feed, posts here usually surface around school events, parent volunteer needs, and clubs. Parents, students, alumni, and staff are welcome to weigh in.