Glenbard South High School

Glenbard South High School, a moderately sized high school in Glen Ellyn, Illinois, one of the schools within Glenbard Twp HSD 87, serves 1,090 students, covering grades 9 through 12. Enrollment runs roughly 31% larger than the state mean of about 834.

Within Glenbard Twp HSD 87, which oversees 4 schools and 7,810 students, Glenbard South High School is one campus in the system.

Demographically, Glenbard South High School shows that White students make up the majority at 56%. Other groups include 18% Hispanic, 12% Asian, 10% Black, 4% multiracial. That is visibly less White than the county at large, where the share is closer to 65%.

On the resource side, The school lists 69 full-time-equivalent teachers, for a student-teacher ratio near 15.8:1. That figure is higher than the state norm's 13.8:1 average. Roughly 29% of students at Glenbard South High School qualify for free or reduced-price lunch, often used as a Title I proxy.

With demographic context factored in, Glenbard South High School tracks the demographic baseline. The model predicts 54.5% given the school's FRL share; actual proficiency is 60.0%.

Across the wider county, DuPage County reports that median household income runs about $112,096, 52% of adults hold a bachelor's degree or higher, and the poverty rate sits near 5%. Glenbard South High School is one of 277 public schools in DuPage County (combined enrollment of about 138,557 students).

The closest other public school is Arbor View Elem School, roughly 0.5 miles away. 8 of the 8 nearest public schools sit inside a five-mile radius. Among the 9 schools in that immediate cluster with test data (this one included), Glenbard South High School ranks 7th on composite proficiency, below the local average of 63.3%.

The school occupies a suburban site.

Five-year trend. Looking back 7 years, enrollment at Glenbard South High School has edged down 6%, going from 1,158 students in 2018 to 1,090 in 2025. Over the same period, the White share shrank from 63% to 56%.

Within the allk12 community for this school, posts here usually surface around classroom updates, athletics, and weather closures. The community welcomes input from current and former families.