Glenbrook South High School at a glance
- National rank: #523 (2026-27 edition)
- Illinois rank: #23
- Previous edition: Down from #364 in 2021-22
- Graduation rate: 93.4%
- Students: 2,923
Ranks are from the 2026-27 U.S. News & World Report Best High Schools edition. How HighSchoolTrends uses this data.