Crystal Lake Central High School vs South Elem 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.
Crystal Lake Central High School
Crystal Lake · Public high · Grades 9–12
1,443 students
South Elem School
Crystal Lake · Public elementary · Grades K–5
390 students
| Measure | Crystal Lake Central High School Crystal Lake, Illinois | South Elem School Crystal Lake, Illinois |
|---|---|---|
| Success Index (US) | 50 Top 50% | 66 Top 50% |
| State rank | #153 of 691 | #390 of 2,303 |
| National rank | #8504 of 16,910 | #14294 of 50,301 |
| Sector | Public | Public |
| Type | High | Elementary |
| Year range | Grades 9–12 | Grades K–5 |
| Students | 1,443 | 390 |
| Enrollment | 1,443 | 390 |
| Free/reduced-price lunch | 35.3% | 26.7% |
| Students per teacher | 17.0 | 11.1 |
| Reading proficiency | 44% | 52% |
| Math proficiency | 42% | 47% |
| city | Crystal Lake | Crystal Lake |
| state | Illinois | Illinois |
| Website | – | – |
The verdict
- •South Elem School scores higher on the Success Index (US) (65.8 vs 49.5).
- •South Elem School does better on math proficiency (47% vs 42%).
- •South Elem School does better on reading proficiency (52% vs 44%).
- •South Elem School does better on community advantage (fewer free/reduced-price lunch) (26.7% vs 35.3%).
- •South Elem School does better on students per teacher (11.1 vs 17.0).
- •Crystal Lake Central High School is the larger school with 1,443 students compared with 390.
The Success Index (US) summarises published results and context from official data. It does not measure teaching quality or fit. Methodology.
Free academic assessment
Torn between two schools? Start with your child.
Whichever you choose, a free Success Tutoring assessment shows exactly where your child is in English and Maths and how to get ahead before the next school year.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Centres across NSW, VIC, QLD, WA, SA and ACT
Frequently asked questions
Is Crystal Lake Central High School better than South Elem School?
On the Success Index (US), South Elem School ranks higher (65.8 vs 49.5 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 Crystal Lake Central High School and South Elem School?
About 1.9 km in a straight line, between Crystal Lake and Crystal Lake in Illinois.
Which has the better Enrollment?
Crystal Lake Central High School: 1,443. South Elem School: 390. Students enrolled in the latest NCES directory year.
How do Crystal Lake Central High School and South Elem School rank in Illinois?
Crystal Lake Central High School is 153rd of 691 and South Elem School is 390th of 2,303 among high schools in Illinois on the 2025 Success Index (US).