Illinois schools ranked by test score
| Rank | School | Level | Mathematics | vs state |
|---|---|---|---|---|
| 1 | Horizon Science Acad-McKinley Pk Chicago · Horizon Science Acad-McKinley Pk | Combined | 37.6% | -0.3pp |
| 2 | Cambridge Lakes Charter School Pingree Grove · CUSD 300 | Combined | 35.3% | -2.6pp |
| 3 | Horizon Science Acad-Belmont Chicago · Horizon Science Acad-Belmont | Combined | 28.0% | -9.9pp |
| 4 | Catalyst Charter - Maria ES Chicago · Chicago Public Schools Dist 299 | Combined | 25.9% | -12.0pp |
| 5 | Horizon Sci Acad - Southwest Chtr Chicago · Chicago Public Schools Dist 299 | Combined | 22.8% | -15.1pp |
| 6 | Acero Chtr Sor Juana Ines de la Chicago · Chicago Public Schools Dist 299 | Combined | 10.2% | -27.7pp |
| 7 | CICS - Longwood Campus Chicago · Chicago Public Schools Dist 299 | Combined | 9.8% | -28.1pp |
| 8 | Edwin A Lee Elementary School Springfield · Springfield SD 186 | Combined | 9.3% | -28.6pp |
About this ranking
Schools are ranked by the percentage of students who scored at or above the IAR + ISA % Proficient (Levels 4-5) threshold on the latest available IAR + ISA Mathematics test (school year 2024-25). A higher percentage is better.
Only public schools with a reasonable cohort size are included (at least 50 total students enrolled, since the source file does not include per-subject student counts), so very small programs and special-purpose centers are filtered out.
The state average shown above is enrollment-weighted: we multiply each school's score by how many of its students tested, sum those across every public school in Illinois, and divide by the total students tested. This way a big school counts more than a tiny one in the typical-student average.