Williamson County schools ranked by test score
Latest IAR + ISA year (2024-25). 5 schools in Williamson County, Illinois with reported Science scores. Illinois state average: 40.3%.
| Rank | School | Level | Science | vs state |
|---|---|---|---|---|
| 1 | Carterville Intermediate Sch Carterville · Carterville CUSD 5 | Middle | 53.2% | +12.9pp |
| 2 | Carterville Jr High Sch Carterville · Carterville CUSD 5 | Middle | 53.0% | +12.7pp |
| 3 | Herrin Middle School Herrin · Herrin CUSD 4 | Middle | 49.0% | +8.7pp |
| 4 | Washington Middle School Johnston City · Johnston City CUSD 1 | Middle | 35.0% | -5.3pp |
| 5 | Marion Jr High School Marion · Marion CUSD 2 | Middle | 32.0% | -8.3pp |
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 Science 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.