Comm H S Dist 99 - South High Sch vs O Neill Middle School
A head-to-head comparison of two schools in Illinois, United States, 1.9 km apart, using official American 2025 data. The better value in each row is highlighted.
Comm H S Dist 99 - South High Sch
Downers Grove · Public high · Grades 9–12
2,591 students
O Neill Middle School
Downers Grove · Public middle · Grades 7–8
403 students
| Measure | Comm H S Dist 99 - South High Sch Downers Grove, Illinois | O Neill Middle School Downers Grove, Illinois |
|---|---|---|
| Success Index (US) | 49 Lower 50% | 52 Top 50% |
| State rank | #164 of 691 | #242 of 670 |
| National rank | #8759 of 16,910 | #7175 of 15,369 |
| Sector | Public | Public |
| Type | High | Middle |
| Year range | Grades 9–12 | Grades 7–8 |
| Students | 2,591 | 403 |
| Enrollment | 2,591 | 403 |
| Free/reduced-price lunch | – | 21.6% |
| Students per teacher | 14.7 | 13.9 |
| Reading proficiency | 43% | 35% |
| Math proficiency | 48% | 40% |
| city | Downers Grove | Downers Grove |
| state | Illinois | Illinois |
| Website | – | – |
The verdict
- •O Neill Middle School scores higher on the Success Index (US) (52.1 vs 48.5).
- •Comm H S Dist 99 - South High Sch does better on math proficiency (48% vs 40%).
- •Comm H S Dist 99 - South High Sch does better on reading proficiency (43% vs 35%).
- •O Neill Middle School does better on students per teacher (13.9 vs 14.7).
- •Comm H S Dist 99 - South High Sch is the larger school with 2,591 students compared with 403.
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 Comm H S Dist 99 - South High Sch better than O Neill Middle School?
On the Success Index (US), O Neill Middle School ranks higher (52.1 vs 48.5 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 Comm H S Dist 99 - South High Sch and O Neill Middle School?
About 1.9 km in a straight line, between Downers Grove and Downers Grove in Illinois.
Which has the better Enrollment?
Comm H S Dist 99 - South High Sch: 2,591. O Neill Middle School: 403. Students enrolled in the latest NCES directory year.
How do Comm H S Dist 99 - South High Sch and O Neill Middle School rank in Illinois?
Comm H S Dist 99 - South High Sch is 164th of 691 and O Neill Middle School is 242nd of 670 among high schools in Illinois on the 2025 Success Index (US).