Williamson County schools ranked by test score
Latest IAR + ISA year (2024-25). 5 schools in Williamson County, Illinois with reported Mathematics scores. Illinois state average: 37.9%.
| Rank | School | Level | Mathematics | vs state |
|---|---|---|---|---|
| 1 | Carterville Intermediate Sch Carterville · Carterville CUSD 5 | Middle | 67.1% | +29.2pp |
| 2 | Carterville Jr High Sch Carterville · Carterville CUSD 5 | Middle | 50.2% | +12.3pp |
| 3 | Herrin Middle School Herrin · Herrin CUSD 4 | Middle | 36.2% | -1.7pp |
| 4 | Marion Jr High School Marion · Marion CUSD 2 | Middle | 31.4% | -6.5pp |
| 5 | Washington Middle School Johnston City · Johnston City CUSD 1 | Middle | 16.8% | -21.1pp |
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). Only public schools in Williamson County, Illinois with a reasonable cohort size are shown. A higher percentage is better.
The comparison column shows the gap to the Illinois statewide enrollment-weighted average. To compare against neighboring counties, use the full Illinois ranking.