Mason/Clark Middle Sch

Mason/Clark Middle Sch, a moderately sized 6-8 campus in East Saint Louis, Illinois, run under East St Louis SD 189, enrolls 540 students, covering grades 5 through 8.

Mason/Clark Middle Sch is one of 10 schools operated by East St Louis SD 189, a district that instructs 4,646 students overall.

On demographics, Mason/Clark Middle Sch reports that the student body is overwhelmingly Black (95%); the rest reads as 3% Hispanic. That is noticeably more Black than the county at large, where the share is closer to 28%.

On the resource side, On paper, Mason/Clark Middle Sch has 47 full-time-equivalent teachers, translating to a class-load average of around 11.5:1. Statewide, the average ratio sits near 13.0:1, putting Mason/Clark Middle Sch tighter than the state norm the norm. An estimated 98% of students are eligible for free or reduced-price lunch, often used as a Title I proxy. That share is north of St. Clair County's rate of about 54%.

Adjusting for the school's free-and-reduced-lunch share, Mason/Clark Middle Sch sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 14.8%; this one delivers 10.8%.

In the broader community, ACS estimates for St. Clair County put median household income runs about $73,854, 32% of adults hold a bachelor's degree or higher, and census figures put the poverty rate at about 10%. Across St. Clair County's 96 public schools (combined enrollment of about 40,879 students), Mason/Clark Middle Sch is one campus in the mix.

The closest other public school is East St Louis Senior High School, roughly 0.4 miles away. 8 of the 8 nearest public schools sit inside a five-mile radius. Ranking that nearby cluster on reported proficiency puts Mason/Clark Middle Sch at 7th of 9; the average score across the group is 23.3%.

The campus sits in a residential setting.

Five-year trend. Looking back 7 years, enrollment at Mason/Clark Middle Sch has edged down 38%, going from 870 students in 2018 to 540 in 2025. The student-to-teacher ratio tightened from 16.4:1 in 2018 to 11.5:1 today.

Inside the community feed, the page collects discussion, questions, and updates around school events, parent volunteer needs, and clubs. The community welcomes input from current and former families.