Winnebago County schools ranked by test score
Latest IAR + ISA year (2024-25). 61 schools in Winnebago County, Illinois with reported Mathematics scores. Illinois state average: 37.9%.
| Rank | School | Level | Mathematics | vs state |
|---|---|---|---|---|
| 1 | Thurgood Marshall Elementary Rockford · Rockford SD 205 | Elementary | 98.5% | +60.6pp |
| 2 | Thurgood Marshall School Rockford · Rockford SD 205 | Middle | 92.4% | +54.5pp |
| 3 | Prairie Hill Elem School South Beloit · Prairie Hill CCSD 133 | Elementary | 80.2% | +42.3pp |
| 4 | Whitman Post Elem School Rockton · Rockton SD 140 | Elementary | 65.5% | +27.6pp |
| 5 | Stone Creek School Roscoe · Kinnikinnick CCSD 131 | Elementary | 64.1% | +26.2pp |
| 6 | Durand Elem School Durand · Durand CUSD 322 | Elementary | 61.0% | +23.1pp |
| 7 | Pecatonica Elem School Pecatonica · Pecatonica CUSD 321 | Elementary | 58.6% | +20.7pp |
| 8 | Shirland C C School Shirland · Shirland CCSD 134 | Elementary | 57.7% | +19.8pp |
| 9 | Willowbrook Middle School South Beloit · Prairie Hill CCSD 133 | Middle | 55.0% | +17.1pp |
| 10 | Kinnikinnick School Roscoe · Kinnikinnick CCSD 131 | Elementary | 54.4% | +16.5pp |
| 11 | Haskell Elementary School Rockford · Rockford SD 205 | Elementary | 52.1% | +14.2pp |
| 12 | Roscoe Middle School Roscoe · Kinnikinnick CCSD 131 | Middle | 51.0% | +13.1pp |
| 13 | Olson Park Elem School Machesney Park · Harlem UD 122 | Elementary | 48.8% | +10.9pp |
| 14 | Stephen Mack Middle School Rockton · Rockton SD 140 | Middle | 45.7% | +7.8pp |
| 15 | Jean McNair Elementary School Winnebago · Winnebago CUSD 323 | Elementary | 44.4% | +6.5pp |
| 16 | Brookview Elem School Rockford · Rockford SD 205 | Elementary | 41.7% | +3.8pp |
| 17 | Ralston Elem School Machesney Park · Harlem UD 122 | Elementary | 41.7% | +3.8pp |
| 18 | Marquette Elem School Machesney Park · Harlem UD 122 | Elementary | 37.5% | -0.4pp |
| 19 | Montessori Elementary School Rockford · Rockford SD 205 | Elementary | 36.8% | -1.1pp |
| 20 | Winnebago Middle School Winnebago · Winnebago CUSD 323 | Middle | 35.2% | -2.7pp |
| 21 | Riverview Elementary School South Beloit · County of Winnebago SD 320 | Elementary | 30.8% | -7.1pp |
| 22 | Pecatonica Comm Middle School Pecatonica · Pecatonica CUSD 321 | Middle | 30.7% | -7.2pp |
| 23 | Machesney Elem School Machesney Park · Harlem UD 122 | Elementary | 30.4% | -7.5pp |
| 24 | Spring Creek Elem School Rockford · Rockford SD 205 | Elementary | 30.4% | -7.5pp |
| 25 | Maple Elem School Loves Park · Harlem UD 122 | Elementary | 29.7% | -8.2pp |
| 26 | Clifford P Carlson Elem School Rockford · Rockford SD 205 | Elementary | 29.4% | -8.5pp |
| 27 | Cherry Valley Elementary School Rockford · Rockford SD 205 | Elementary | 28.7% | -9.2pp |
| 28 | West View Elem School Rockford · Rockford SD 205 | Elementary | 27.9% | -10.0pp |
| 29 | Loves Park Elem School Loves Park · Harlem UD 122 | Elementary | 27.1% | -10.8pp |
| 30 | Windsor Elem School Loves Park · Harlem UD 122 | Elementary | 26.4% | -11.5pp |
| 31 | Rock Cut Elem School Loves Park · Harlem UD 122 | Elementary | 24.6% | -13.3pp |
| 32 | Rolling Green Rockford · Rockford SD 205 | Elementary | 24.0% | -13.9pp |
| 33 | Swan Hillman Elem School Rockford · Rockford SD 205 | Elementary | 23.6% | -14.3pp |
| 34 | Maud E Johnson Elem School Rockford · Rockford SD 205 | Elementary | 23.4% | -14.5pp |
| 35 | Harlem Middle School Loves Park · Harlem UD 122 | Middle | 22.2% | -15.7pp |
| 36 | Arthur Froberg Elem School Rockford · Rockford SD 205 | Elementary | 20.5% | -17.4pp |
| 37 | Durand Jr High School Durand · Durand CUSD 322 | Middle | 20.4% | -17.5pp |
| 38 | Barbour Two-Way Lang Immersion Rockford · Rockford SD 205 | Elementary | 20.3% | -17.6pp |
| 39 | Whitehead Elem School Rockford · Rockford SD 205 | Elementary | 20.2% | -17.7pp |
| 40 | C Henry Bloom Elem School Rockford · Rockford SD 205 | Elementary | 18.5% | -19.4pp |
| 41 | Legacy Acad of Excellence Charter Rockford · Rockford SD 205 | Elementary | 18.5% | -19.4pp |
| 42 | Gregory Elem School Rockford · Rockford SD 205 | Elementary | 14.6% | -23.3pp |
| 43 | Julia Lathrop Elem School Rockford · Rockford SD 205 | Elementary | 14.4% | -23.5pp |
| 44 | South Beloit Jr High School South Beloit · County of Winnebago SD 320 | Middle | 14.3% | -23.6pp |
| 45 | Ellis Elementary School Rockford · Rockford SD 205 | Elementary | 14.0% | -23.9pp |
| 46 | McIntosh Elementary Rockford · Rockford SD 205 | Elementary | 12.9% | -25.0pp |
| 47 | Blackhawk Elementary School South Beloit · County of Winnebago SD 320 | Middle | 12.7% | -25.2pp |
| 48 | Galapagos Rockford Charter Sch Rockford · Rockford SD 205 | Elementary | 12.2% | -25.7pp |
| 49 | Washington Elementary School Rockford · Rockford SD 205 | Elementary | 12.0% | -25.9pp |
| 50 | Bernard W Flinn Middle School Rockford · Rockford SD 205 | Middle | 11.2% | -26.7pp |
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 Winnebago 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.