Glenbard South High School vs Lisle High School
A head-to-head comparison of two high schools in Illinois, United States, 4.4 km apart, using official American 2025 data. The better value in each row is highlighted.
Glenbard South High School
Glen Ellyn · Public high · Grades 9–12
1,090 students
Lisle High School
Lisle · Public high · Grades 9–12
447 students
| Measure | Glenbard South High School Glen Ellyn, Illinois | Lisle High School Lisle, Illinois |
|---|---|---|
| Success Index (US) | 59 Top 50% | 66 Top 25% |
| State rank | #77 of 691 | #34 of 691 |
| National rank | #6172 of 16,910 | #4199 of 16,910 |
| Sector | Public | Public |
| Type | High | High |
| Year range | Grades 9–12 | Grades 9–12 |
| Students | 1,090 | 447 |
| Enrollment | 1,090 | 447 |
| Free/reduced-price lunch | 29.4% | 35.1% |
| Students per teacher | 15.8 | 11.2 |
| Reading proficiency | 48% | 52% |
| Math proficiency | 50% | 57% |
| city | Glen Ellyn | Lisle |
| state | Illinois | Illinois |
| Website | – | – |
The verdict
- •Lisle High School scores higher on the Success Index (US) (66.4 vs 58.5).
- •Lisle High School does better on math proficiency (57% vs 50%).
- •Lisle High School does better on reading proficiency (52% vs 48%).
- •Glenbard South High School does better on community advantage (fewer free/reduced-price lunch) (29.4% vs 35.1%).
- •Lisle High School does better on students per teacher (11.2 vs 15.8).
- •Glenbard South High School is the larger school with 1,090 students compared with 447.
The Success Index (US) summarises published results and context from official data. It does not measure teaching quality or fit. Methodology.
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Frequently asked questions
Is Glenbard South High School better than Lisle High School?
On the Success Index (US), Lisle High School ranks higher (66.4 vs 58.5 out of 100). The index is built from published results and context data, not from teaching quality or fit, so visit both schools before deciding.
How far apart are Glenbard South High School and Lisle High School?
About 4.4 km in a straight line, between Glen Ellyn and Lisle in Illinois.
Which has the better Enrollment?
Glenbard South High School: 1,090. Lisle High School: 447. Students enrolled in the latest NCES directory year.
How do Glenbard South High School and Lisle High School rank in Illinois?
Glenbard South High School is 77th of 691 and Lisle High School is 34th of 691 among high schools in Illinois on the 2025 Success Index (US).