Glenbrook North High School is a public high school in Northbrook, Illinois, a north suburb of Chicago, United States. It was established in 1953 and is part of the Northfield Township High School District 225. In 2022, it was ranked the 48th-best public high school in the United States by Niche.
Serving 2,111 students in grades 9-12, Glenbrook North High School ranks in the top 5% of all schools in Illinois for overall test scores (math proficiency is top 1%, and reading proficiency is top 1%).
The percentage of students achieving proficiency in math is 73% (which is higher than the Illinois state average of 27%). The percentage of students achieving proficiency in reading/language arts is 71% (which is higher than the Illinois state average of 30%).
The student-teacher ratio of 13:1 is equal to the Illinois state level of 13:1.
Minority enrollment is 34% of the student body (majority Asian), which is lower than the Illinois state average of 55% (majority Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 2,111 students
- Student-Teacher Ratio: 13:1
- Minority Enrollment: 34%
- Graduation Rate: 97% (Top 1% in IL)
- Overall Testing Rank: Top 5%
- Math Proficiency: 73% (Top 1%)
- Reading Proficiency: 71% (Top 5%)
- Science Proficiency: 71% (Top 20%)
- Source: National Center for Education Statistics (NCES), IL Dept. of Education
Top Rankings
Glenbrook North High School ranks among the top 20% of public schools in Illinois for:
Category
Attribute
Overall Rank
Most improved public schools
Math Proficiency
Reading/Language Arts Proficiency
Science Proficiency
Graduation Rate
School Overview
Glenbrook North High School's student population of 2,111 students has stayed relatively flat over five school years.
The teacher population of 161 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
Total Students
2,111 students
Total Classroom Teachers
161 teachers
Year Founded
1953
Colors
Green, Gold
School Calendar
School Rankings
Glenbrook North High School ranks within the top 5% of all 3,542 schools in Illinois (based off of combined math and reading proficiency testing data).
The diversity score of Glenbrook North High School is 0.51, which is less than the diversity score at state average of 0.69. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#37 out of 3542 schools
(Top 5%)
(Top 5%)
Math Test Scores (% Proficient)
73%
27%
Reading/Language Arts Test Scores (% Proficient)
71%
30%
Science Test Scores (% Proficient)
71%
50%
Student-Teacher Ratio
13:1
13:1
American Indian
n/a
n/a
Asian
23%
6%
Hispanic
5%
29%
Black
1%
16%
White
66%
45%
Hawaiian
n/a
n/a
Two or more races
5%
4%
All Ethnic Groups
Graduation Rate
97%
87%
Eligible for Free Lunch
6%
43%
Eligible for Reduced Lunch (11-12)
6%
27%
School Statewide Testing
School District Name
Glenbrook HSD 225 School District
Source: National Center for Education Statistics (NCES), IL Dept. of Education
School Notes
- School Mascot: Sparty Jones
Frequently Asked Questions
What is Glenbrook North High School's ranking?
Glenbrook North High School is ranked #37 out of 3,542 schools, which ranks it among the top 5% of public schools in Illinois.
What schools are Glenbrook North High School often compared to?
Glenbrook North High Schoolis often viewed alongside schools like Glenbrook South High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
73% of students have achieved math proficiency (compared to the 27% IL state average), while 71% of students have achieved reading proficiency (compared to the 30% IL state average).
What is the graduation rate of Glenbrook North High School?
The graduation rate of Glenbrook North High School is 97%, which is higher than the Illinois state average of 87%.
How many students attend Glenbrook North High School?
2,111 students attend Glenbrook North High School.
What is the racial composition of the student body?
66% of Glenbrook North High School students are White, 23% of students are Asian, 5% of students are Hispanic, 5% of students are Two or more races, and 1% of students are Black.
What is the student-teacher ratio of Glenbrook North High School?
Glenbrook North High School has a student ration of 13:1, which is equal to the Illinois state average of 13:1.
What grades does Glenbrook North High School offer ?
Glenbrook North High School offers enrollment in grades 9-12
What school district is Glenbrook North High School part of?
Glenbrook North High School is part of Glenbrook HSD 225 School District.
In what neighborhood is Glenbrook North High School located?
Glenbrook North High School is located in the Techny neighborhood of Northbrook, IL. There are 6 other public schools located in Techny.
School Reviews
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