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Glenbrook North High School

Public Grades 9-12
10th
SchoolDigger Rank ?
of 620 Illinois High Schools
Better than 98% of Illinois high schools
Summary

Glenbrook North High School is a public high school serving grades 9–12 in Northbrook, in Chicago’s northern suburbs, with 2,111 students. SchoolDigger ranks it 10th of 620 Illinois schools for 2025–26, in the 98th percentile with five stars; among six nearby schools with data, it ranks second, behind New Trier Township H S Winnetka. The school’s current test results are well above state and district results, and mathematics is its clearest relative strength.

In grade 11 ACT results, Glenbrook North is well ahead of the state in ELA (87% versus 50%), math (86% versus 40%) and science (87% versus 48%), and it also exceeds Glenbrook HSD 225 by 4, 8 and 6 percentage points, respectively. Math has the largest advantage over the nearby-school average: 23 points, compared with 17 in ELA and 19 in science. It ranks second among nearby schools in ELA and math, just behind New Trier by 0.1 and 0.9 points, and first in science by 0.1 point. Grade 9 results lead nearby schools serving that grade; grade 10 results are also strong, though math is a relative dip, ranking third locally. Glenbrook North also has the lowest reported chronic absenteeism rate among nearby schools in 2025–26: 14%, versus the nearby average of 27%. Its 96% graduation rate is above the state’s 90%, but below several nearby schools.

Recent test-score changes are mixed: grade 9 PreACT ELA and math improved by 3 and 6 points from the prior year, while grade 11 ACT ELA and math fell by 3 and 1 points, and grade 10 PreACT math fell by 4. SchoolDigger’s statewide ranking for English Language Learner students rose sharply, from the 27th percentile in 2022–23 to the 94th percentile in 2024–25, indicating a much stronger result for this group on that measure. The reported student-teacher ratio is 13:1 in 2024–25, close to the nearby-school average of 13.0:1. As context, 4% of students were free/reduced lunch eligible in 2021–22, compared with a 24% average among nearby schools; this is an observation, not an explanation for academic results.

2,111
Students ?
13.0
Student/teacher ratio ?
$31,166
Per pupil spending ?
4.1%
Free/reduced lunch eligible (2021-22) ?
98.4%
Measles protection (all grades) (2025-26)
 2300 Shermer Rd
       Northbrook, IL  60062-6722

(847) 272-6400

District: Glenbrook HSD 225


Feeder schools for Glenbrook North High School:

Elementary:    Greenbriar Elementary School
    Hickory Point Elementary School
    Meadowbrook Elementary School
    Shabonee School
    More...
Middle:    Maple School
    Northbrook Junior High School
    Wood Oaks Junior High School
Racial breakdown:

White:
66.1%
Asian:
22.5%
Hispanic:
5.2%
more
 See top rated Illinois high schools

 Compare Glenbrook North High School to nearby high schools!
At a glance
▲ Ranking trend: Improving — 84th percentile in 2016 → 98th in 2026
Strengths
✓Test scores above the Illinois average (86% vs 47% meeting standards)
✓Ranks in the top 2% of Illinois high schools
✓96% graduate in 4 years — above the Illinois average (90%)
Students meeting standards (2025-2026) ?
This school86%
District avg81%
Illinois avg47%
10th of 620
Illinois public high schools ?
Top 2%▲ up 14 pts since 2016
From top 16% (2016) to top 2% (2026)
See the entire ranking list of Illinois High Schools →
★★★★★
SchoolDigger rating ?
1st of 2High Schools in the Glenbrook HSD 225
Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankIllinois percentileRating
202699.010 of 62098.4%★★★★★
202598.89 of 69898.7%★★★★★
202499.713 of 69798.1%★★★★★
202383.490 of 69987.1%★★★★☆
202296.523 of 69996.7%★★★★★
202199.611 of 68898.4%★★★★★
201997.318 of 70197.4%★★★★★
201898.412 of 64798.1%★★★★★
201797.916 of 64297.5%★★★★★
201671.6102 of 64384.1%★★★★☆
201586.652 of 61491.5%★★★★★
201497.410 of 67098.5%★★★★★
201396.312 of 67098.2%★★★★★
201296.411 of 66598.3%★★★★★
201197.610 of 65598.5%★★★★★
201096.88 of 64398.8%★★★★★
200995.713 of 63297.9%★★★★★
200896.99 of 62498.6%★★★★★
200797.89 of 61298.5%★★★★★
200696.69 of 59698.5%★★★★★
200596.98 of 59098.6%★★★★★
200497.56 of 59299.0%★★★★★
200397.78 of 58698.6%★★★★★

Asian

YearAvg scoreStatewide rankIllinois percentileRating
202683.615 of 12487.9%★★★★☆
202585.412 of 14891.9%★★★★★
202484.327 of 13780.3%★★★★☆
202370.540 of 13470.1%★★★★☆
202278.127 of 14180.9%★★★★☆
202187.218 of 13586.7%★★★★☆
201986.015 of 13088.5%★★★★☆
201884.120 of 13284.8%★★★★☆

Disabled

YearAvg scoreStatewide rankIllinois percentileRating
202684.58 of 11793.2%★★★★★
202597.910 of 49198.0%★★★★★
202499.711 of 42997.4%★★★★★
202396.613 of 42897.0%★★★★★

English Language Learner

YearAvg scoreStatewide rankIllinois percentileRating
202589.116 of 28494.4%★★★★★
202464.239 of 24884.3%★★★★☆
202331.0159 of 21726.7%★☆☆☆☆

Female

YearAvg scoreStatewide rankIllinois percentileRating
202697.49 of 54598.3%★★★★★
202597.69 of 68598.7%★★★★★
202499.412 of 66498.2%★★★★★
202383.192 of 65686.0%★★★★☆
202295.222 of 65896.7%★★★★★
202199.113 of 63998.0%★★★★★
201997.018 of 66597.3%★★★★★
201898.66 of 62099.0%★★★★★

Hispanic

YearAvg scoreStatewide rankIllinois percentileRating
202698.011 of 26895.9%★★★★★
202597.911 of 36697.0%★★★★★
202491.627 of 33692.0%★★★★★
202365.372 of 33378.4%★★★★☆
202295.916 of 33595.2%★★★★★
202199.96 of 31798.1%★★★★★
201998.39 of 31797.2%★★★★★
201898.58 of 29197.3%★★★★★

Low Socio Economic Status

YearAvg scoreStatewide rankIllinois percentileRating
202697.713 of 47897.3%★★★★★
202598.310 of 67298.5%★★★★★
202499.012 of 63998.1%★★★★★
202383.262 of 64490.4%★★★★★
202295.117 of 62697.3%★★★★★
2021100.06 of 61199.0%★★★★★
201995.413 of 63998.0%★★★★★
201898.68 of 58598.6%★★★★★

Male

YearAvg scoreStatewide rankIllinois percentileRating
202699.09 of 52198.3%★★★★★
202599.110 of 68598.5%★★★★★
202499.613 of 66898.1%★★★★★
202383.092 of 66886.2%★★★★☆
202296.821 of 66496.8%★★★★★
202199.710 of 65398.5%★★★★★
201996.722 of 67596.7%★★★★★
201897.215 of 61997.6%★★★★★

Multi-racial

YearAvg scoreStatewide rankIllinois percentileRating
202691.58 of 13093.8%★★★★★
202594.87 of 21196.7%★★★★★
202497.37 of 18296.2%★★★★★
202371.048 of 16370.6%★★★★☆
202290.514 of 17091.8%★★★★★
202177.934 of 16078.8%★★★★☆
201983.524 of 16585.5%★★★★☆
201885.424 of 15484.4%★★★★☆

Special Education

YearAvg scoreStatewide rankIllinois percentileRating
202691.816 of 23893.3%★★★★★
202599.73 of 52799.4%★★★★★
202499.514 of 48297.1%★★★★★
202399.98 of 47698.3%★★★★★
202299.310 of 49398.0%★★★★★
202199.79 of 45398.0%★★★★★
201998.815 of 47396.8%★★★★★
2018100.05 of 37498.7%★★★★★

White

YearAvg scoreStatewide rankIllinois percentileRating
202697.215 of 51597.1%★★★★★
202597.216 of 56497.2%★★★★★
202498.316 of 55497.1%★★★★★
202371.6132 of 55776.3%★★★★☆
202293.633 of 56094.1%★★★★★
202198.018 of 55396.7%★★★★★
201997.417 of 55296.9%★★★★★
201896.519 of 54896.5%★★★★★
How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)
Female (2026)98th percentile~ school
Male (2026)98th percentile~ school
Low Socio Economic Status (2026)97th percentile~ school
White (2026)97th percentile~ school
Hispanic (2026)96th percentile~ school
English Language Learner (2025)94th percentile-4 vs school
Multi-racial (2026)94th percentile-5 vs school
Special Education (2026)93rd percentile-5 vs school
Disabled (2026)93rd percentile-5 vs school
Asian (2026)88th percentile-10 vs school
By subject vs Illinois (2025-2026) ?
Science87%+39 vs state
English Language Arts87%+37 vs state
Mathematics86%+46 vs state

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Frequently Asked Questions about Glenbrook North High School

In the 2024-25 school year, 2,111 students attended Glenbrook North High School.

Students at Glenbrook North High School are 66% White, 23% Asian, 5% Hispanic, 5% Two or more races.

Yes! Glenbrook North High School is one of the best high schools in the state. It ranks 10th of 620 Illinois high schools.

Rate Glenbrook North High School!



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Latest Illinois data All new data »
2025–26 school spending dataNewOct 30, 2026
2025–26 attendance data, dropout rates & graduation ratesNewOct 30, 2026
2025–26 ACT, IAR, ISA & PreACT Secure test scoresNewOct 30, 2026
2013–14 through 2025–26 immunization rates (updated)Oct 19, 2026


SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau, the Illinois Department of Public Health and the Illinois State Board of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.

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