Old Quarry Middle Sch

Located at 16100 W 127th St, in Lemont, Illinois, Old Quarry Middle Sch is a substantial middle school that serves 856 students (grades 6 through 8), overseen by Lemont-Bromberek CSD 113A. Enrollment runs roughly 85% larger than the state mean of about 462.

Within Lemont-Bromberek CSD 113A, which oversees 4 schools and 2,664 students, Old Quarry Middle Sch is one campus in the system.

Demographically, Old Quarry Middle Sch lists that the student body is overwhelmingly White (82%); the rest comes out to 9% Hispanic, 5% Asian. That is meaningfully more White than the county at large, where the share is closer to 44%.

On the income-and-resources front, The school employs 56 full-time-equivalent teachers, for a student-teacher ratio near 15.3:1. The state averages around 13.0:1, so this campus is higher than the state norm typical. An estimated 20% of students are eligible for free or reduced-price lunch, often used as a Title I proxy. Set against Cook County (around 66%), the school's rate is noticeably below typical.

On a demographically-adjusted basis, Old Quarry Middle Sch sits in the top 10% of Illinois schools after the BeatsExpectations adjustment. Predicted proficiency for the school's FRL share is roughly 60.1%; actual is 74.2%, +14.1 points clear of the demographic baseline.

Around the school, Cook County reports that median household earnings sit near $83,498, roughly 43% of adults have completed at least a four-year degree, and roughly 10% of residents live below the federal poverty line. Old Quarry Middle Sch is one of 1406 public schools in Cook County (combined enrollment of about 697,934 students).

River Valley School is the nearest neighboring public school, about 0.9 miles from this campus. Within five miles, there are 8 other public schools. On composite proficiency, Old Quarry Middle Sch comes 1st of 7 in the immediate cluster, ahead of the nearby-schools average of 58.8%.

Old Quarry Middle Sch operates from a residential location.

Five-year trend. Old Quarry Middle Sch's enrollment has ticked up 10% since 2018, when it stood at 775 (now 856). Class-load math has pulled in: from 17.0:1 in 2018 to 15.3:1 in 2025.

Inside the community feed, recent activity here tends to focus on pickup logistics, teacher feedback, and after-school programs. Parents, students, alumni, and staff are welcome to weigh in.