| District | City | Rating | Students | Schools | Grades | Zip Codes |
|---|---|---|---|---|---|---|
| Community High School District 155 | Crystal Lake | 9/10 Excellent · 89th pct | 5,405 | 5 | 9–12 | 4 |
| Huntley Consolidated School District 158 | Huntley | 9/10 Excellent · 81st pct | 8,595 | 9 | PK–12 | 1 |
| Marengo Community High School District 154 | Marengo | 9/10 Excellent · 81st pct | 685 | 1 | 9–12 | 2 |
| Woodstock Community Unit School District 200 | Wonder Lake | 8/10 Good · 72nd pct | 6,159 | 12 | PK–12 | 2 |
| Alden-Hebron School District 19 | Hebron | 8/10 Good · 71st pct | 438 | 3 | PK–12 | 1 |
| McHenry Community High School District 156 | McHenry | 7/10 Good · 60th pct | 2,222 | 1 | 9–12 | 2 |
| Community Unit School District 300 | Algonquin | 5/10 Average · 47th pct | 20,443 | 29 | PK–12 | 5 |
| Johnsburg Community Unit School District 12 | Ringwood | 5/10 Average · 43rd pct | 1,703 | 4 | PK–12 | 1 |
| Harvard Community Unit School District 50 | Harvard | 1/10 Poor · 5th pct | 2,510 | 5 | PK–12 | 1 |
| Richmond-Burton Community High School District 157 | Richmond | Not rated | 549 | 1 | 9–12 | 2 |
How McHenry County compares
Together they enroll 48,709 students across 70 schools. The largest is Community Unit School District 300 with 20,443 students. Districts here average 6.8/10, above the Illinois average of 5.4/10. Ratings range from 1/10 to 9/10. 1 of the 10 districts has no state assessment data and is shown as Not rated.
School Districts in McHenry County, Illinois
McHenry County has 10 public school districts covering 21 zip codes. The top-rated district in McHenry County is Community High School District 155 (9/10). Ratings are based on the share of students proficient in reading and math on state assessments (NCES EDFacts, 2021–22 for most districts), ranked against all districts in Illinois. Directory details come from NCES CCD 2024–25.
Enter your zip code on any page to confirm your exact district assignment — district boundaries are address-specific and may not follow county or city lines.