Cahokia High School

Cahokia High School operates as a middle-of-the-pack high school in Cahokia, Illinois, part of Cahokia CUSD 187. Current enrollment sits at 850 students spanning grades 9 through 12.

Within Cahokia CUSD 187, which oversees 8 schools and 2,991 students, Cahokia High School is one campus in the system.

Looking at the student body, Cahokia High School logs that 89% of students identify as Black, making the school strongly Black-majority. Beyond that, the school reports 5% multiracial, 3% Hispanic, 3% White. That is considerably more Black than the county at large, where the share is closer to 28%.

Looking at the economic backdrop, The school lists 46 full-time-equivalent teachers, for a student-teacher ratio near 18.6:1. The state averages around 13.8:1, so this campus is higher than the state norm typical. About 76% of enrolled students meet the income threshold for free or reduced-price lunch, a number frequently used as a low-income enrollment indicator. That share is noticeably above St. Clair County's rate of about 54%.

After controlling for student poverty, Cahokia High School is in the bottom 10% of Illinois public schools. The BeatsExpectations model predicts schools with this FRL share to land around 27.7%; Cahokia High School posts 10.1%, -17.6 points below that line.

In the area at large, census data for St. Clair County shows the typical household earns roughly $73,854 per year, about 32% of the adult population holds a bachelor's degree or above, and census figures put the poverty rate at about 10%. In all, St. Clair County runs 96 public schools (combined enrollment of about 40,879 students), of which Cahokia High School is one.

The closest other public school is Estelle Sauget School of Choice, roughly 0.4 miles away. Within five miles, there are 8 other public schools. Ranking that nearby cluster on reported proficiency puts Cahokia High School at 4th of 8; the average score across the group is 11.2%.

The school occupies a suburban site.

Over the past 7-year window. Over the past 7-year window, the student count shrank 4%: 883 students in 2018 compared to 850 in 2025. The student-to-teacher ratio grew from 15.6:1 in 2018 to 18.6:1 today.

In the discussion threads here, the page collects discussion, questions, and updates around classroom updates, athletics, and weather closures. Members of the school community can share what they know.