McHenry County schools ranked by test score
Latest IAR + ISA year (2024-25). 18 schools in McHenry County, Illinois with reported Science scores. Illinois state average: 40.3%.
| Rank | School | Level | Science | vs state |
|---|---|---|---|---|
| 1 | Marlowe Middle School Lake in the Hills · Huntley Comm Sch Dist 158 | Middle | 68.1% | +27.8pp |
| 2 | Heineman Middle School Algonquin · Huntley Comm Sch Dist 158 | Middle | 67.1% | +26.8pp |
| 3 | Richard F Bernotas Middle Sch Crystal Lake · Crystal Lake CCSD 47 | Middle | 59.4% | +19.1pp |
| 4 | Prairie Grove Junior High School Crystal Lake · Prairie Grove CSD 46 | Middle | 58.8% | +18.5pp |
| 5 | Cary Jr High School Cary · Cary CCSD 26 | Middle | 56.8% | +16.5pp |
| 6 | Creekside Middle School Woodstock · Woodstock CUSD 200 | Middle | 53.9% | +13.6pp |
| 7 | Hannah Beardsley Middle School Crystal Lake · Crystal Lake CCSD 47 | Middle | 52.4% | +12.1pp |
| 8 | Northwood Middle School Woodstock · Woodstock CUSD 200 | Middle | 52.2% | +11.9pp |
| 9 | Algonquin Middle School Algonquin · CUSD 300 | Middle | 50.5% | +10.2pp |
| 10 | Lundahl Middle School Crystal Lake · Crystal Lake CCSD 47 | Middle | 50.2% | +9.9pp |
| 11 | Fox River Grove Middle School Fox River Grove · Fox River Grove Cons SD 3 | Middle | 50.0% | +9.7pp |
| 12 | Parkland School McHenry · McHenry CCSD 15 | Middle | 49.1% | +8.8pp |
| 13 | Nippersink Middle School Richmond · Nippersink SD 2 | Middle | 47.2% | +6.9pp |
| 14 | McHenry Middle School McHenry · McHenry CCSD 15 | Middle | 45.3% | +5.0pp |
| 15 | Alden-Hebron Middle School Hebron · Alden Hebron SD 19 | Middle | 41.7% | +1.4pp |
| 16 | Marengo Comm Middle School Marengo · Marengo-Union E Cons D 165 | Middle | 41.7% | +1.4pp |
| 17 | Harvard Jr High School Harvard · Harvard CUSD 50 | Middle | 29.6% | -10.7pp |
| 18 | Johnsburg Jr High School Johnsburg · Johnsburg CUSD 12 | Middle | 25.0% | -15.3pp |
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 McHenry 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.