Mchenry Community High School serves 2,231 students in grades 9-12.
The percentage of students achieving proficiency in reading/language arts is 24% (which is lower than the Illinois state average of 30%).
The student:teacher ratio of 15:1 is higher than the Illinois state level of 13:1.
Minority enrollment is 31% of the student body (majority Hispanic), which is lower than the Illinois state average of 55% (majority Hispanic).
Quick Stats (2025)
- Grades: 9-12
- Enrollment: 2,231 students
- Student:Teacher Ratio: 15:1
- Minority Enrollment: 31%
- Graduation Rate: 92% (Top 30% in IL)
- Reading Proficiency: 24% (Btm 50%)
- Science Proficiency: 54% (Top 50%)
- Source: National Center for Education Statistics (NCES), IL Dept. of Education
School Overview
Mchenry Community High School's student population of 2,231 students has stayed relatively flat over five school years.
The teacher population of 146 teachers has grown by 5% over five school years.
Grades Offered
Grades 9-12
Total Students
2,231 students
Gender %
Total Classroom Teachers
146 teachers
Year Founded
1925
School Colors
Black, Orange
School Rankings
The diversity score of Mchenry Community High School is 0.46, which is less than the diversity score at state average of 0.70. The school's diversity has stayed relatively flat over five school years.
Reading/Language Arts Test Scores (% Proficient)
24%
30%
Science Test Scores (% Proficient)
54%
50%
Student : Teacher Ratio
15:1
13:1
American Indian
1%
1%
Asian
1%
6%
Hispanic
26%
28%
Black
1%
16%
White
69%
45%
Hawaiian
n/a
n/a
Two or more races
2%
4%
All Ethnic Groups
Graduation Rate
92%
87%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), IL Dept. of Education
Profile last updated: 02/09/2025
Frequently Asked Questions
What is the graduation rate of Mchenry Community High School?
The graduation rate of Mchenry Community High School is 92%, which is higher than the Illinois state average of 87%.
How many students attend Mchenry Community High School?
2,231 students attend Mchenry Community High School.
What is the racial composition of the student body?
69% of Mchenry Community High School students are White, 26% of students are Hispanic, 2% of students are Two or more races, 1% of students are American Indian, 1% of students are Asian, and 1% of students are Black.
What is the student:teacher ratio of Mchenry Community High School?
Mchenry Community High School has a student ration of 15:1, which is higher than the Illinois state average of 13:1.
What grades does Mchenry Community High School offer ?
Mchenry Community High School offers enrollment in grades 9-12
What school district is Mchenry Community High School part of?
Mchenry Community High School is part of Mchenry CHSD 156 School District.
School Reviews
Review Mchenry Community High School. Reviews should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
Recent Articles

Is Your School Understaffed? Why Schools are Instituting Hiring Freezes
Learn about how the current budget constraints are prompting public schools to institute hiring freezes - and how this will impact your children.

43 Fantastic ESL Resources for Students
We've put together this ESL resource guide to help students, from teens to adults, get the help they need to achieve their goals with learning English

Segregation in K-12 Education: Colonial Era
Explore the origins of educational segregation during the colonial era and the differential treatment of Native American, African American, and white students. This article delves into the historical context, policies, and societal attitudes that shaped early education in colonial America, highlighting the disparities and injustices that persisted within the schooling systems of that time.