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Glenbard South High School

23W200 Butterfield Rd, Glen Ellyn, IL 60137

ASchola Grade
Directions CallWebsite
Grades
9–12
High
Students
1,090
Enrolled 2024–25
Students per teacher
15.8 : 1
Full-time teachers
District
Glenbard Twp HSD 87
DuPage County

Schola Grade A · Excellent

Letter grade (A–F) · compared with 684 Illinois high schools · How we grade
Test scores50% proficient in math & reading
94thpercentile
Equity32% of low-income students proficient
94thpercentile
Attendance21% chronically absent
81stpercentile
Graduation rate94% graduate in 4 years
77thpercentile
College readinessAt least 45% take AP, IB or dual-enrollment courses
91stpercentile
Class size15.8 students per teacher
22ndpercentile

Percentiles compare this school with other Illinois high schools; the line marks the middle. Data: test scores 2021–22, graduation and absenteeism 2022–23 (U.S. Department of Education, EDFacts); coursework 2023–24 (Civil Rights Data Collection); staffing 2024–25 (NCES).

About Glenbard South High School

Glenbard South High School is a public high school in Glen Ellyn, Illinois, serving grades 9–12. It is part of Glenbard Twp HSD 87. The school is located in a large suburb in DuPage County.

In the 2024–25 school year, 1,090 students were enrolled, with about 15.8 students for every full-time teacher. That ratio is larger than the typical Illinois high school (13.3 students per teacher). Its Schola Grade is A (excellent), compared with 684 Illinois high schools.

Grades & enrollment

Students per grade, 2024–25Grades 9–12

Location & nearby schools

23W200 Butterfield Rd
Glen Ellyn, IL 60137
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School details

Type
Public School · What this means
Level
High
Grades offered
9–12
Enrollment (2024–25)
1,090 students
Students per teacher
15.8 to 1
AP courses offered
23
Charter school
No
Magnet school
No
Virtual learning
Offers virtual courses
Locale
Suburb — Large
School district
Glenbard Twp HSD 87
County
DuPage County
NCES school ID
171683001990

Schools near Glenbard South High School

All 16 schools in Glen Ellyn →

School data comes from the U.S. Department of Education: the National Center for Education Statistics (NCES) Common Core of Data and EDGE school locations (2024–25) and Private School Survey (2023–24), the Civil Rights Data Collection (2023–24), and EDFacts (test results 2021–22; graduation and chronic absenteeism 2022–23), plus other public sources. Please contact the school to confirm enrollment, programs, and other details. How we source data.