Lake Forest High School

Set in Lake Forest, Illinois, Lake Forest High School is a well-populated 9-12 campus, operated by Lake Forest CHSD 115. It hosts 1,359 students across grades 9 through 12. That puts it 63% bigger than the typical public school in Illinois, which averages around 834 students.

Lake Forest High School is a school of Lake Forest CHSD 115, the district that handles curriculum, staffing, and budget for the campus.

Looking at the student body, Lake Forest High School records that 76% of the student body identifies as White; the rest is composed of 11% Hispanic, 6% Asian, 5% multiracial. By comparison, Lake County as a whole is about 61% White, so the school skews meaningfully more White than its surroundings.

In terms of school funding signals, Staff filings list 131 full-time-equivalent teachers, which works out to roughly 10.4:1 students per teacher. The state averages around 13.8:1, so this campus is tighter than the state norm typical.

Zooming out to the county, census data for Lake County shows median household earnings sit near $110,416, roughly 48% of adults have completed at least a four-year degree, and roughly 6% of residents live below the federal poverty line. In all, Lake County runs 214 public schools (combined enrollment of about 118,032 students), of which Lake Forest High School is one.

Sheridan Elem School is the nearest neighboring public school, about 0.2 miles from this campus. 8 of the 8 nearest public schools sit inside a five-mile radius.

Geographically, the school is in a residential area.

Five-year trend. Looking back 7 years, enrollment at Lake Forest High School has ticked down 16%, going from 1,611 students in 2018 to 1,359 in 2025. The White share of enrollment edged down from 87% to 76% over that span. The student-to-teacher ratio fell from 12.4:1 in 2018 to 10.4:1 today.

Inside the community feed, members of the Lake Forest High School community share and discuss science fair prep, picture-day reminders, and bus-route questions. Contributors range from current parents to recent graduates and teachers.