Glenbrook South High School

(847)729-2000

www.glenbrook225.org/south

2,923 Students

High School 9th - 12th

School Overview

Glenbrook South High School (GBS), located in Glenview, Illinois, is a premier public secondary school serving students in grades 9–12. Part of the Northfield Township High School District 225, the school is widely recognized for its commitment to academic excellence and its comprehensive, rigorous curriculum. GBS consistently ranks among the top high schools in the state, offering a vast array of Advanced Placement (AP) courses, specialized programs, and innovative learning opportunities designed to prepare students for success in higher education and beyond.

Beyond its academic reputation, Glenbrook South is known for fostering a vibrant and inclusive campus culture. The school boasts an extensive selection of extracurricular activities, including championship-level athletics, competitive performing arts programs, and a wide variety of student-led clubs. With a philosophy centered on holistic development, GBS encourages students to engage deeply with their community, prioritize personal well-being, and pursue their unique interests within a supportive, diverse, and well-resourced environment.

2,923

Total Students

227.4

Full-Time Teachers

12.9

Student/Teacher Ratio

N/A

Free/Reduced Lunch

Student Demographics

Student Demographics Data Table

Student Demographics for Glenbrook South High School
Demographic	Student Count
White	1,577
Hispanic	466
Black	53
Asian	675
Two or More	145
American Indian	2
Pacific Islander	5

White
1,577 (54.0%)
Asian
675 (23.1%)
Hispanic
466 (15.9%)
Two or More
145 (5.0%)
Black
53 (1.8%)
Pacific Islander
5 (0.2%)
American Indian
2 (0.1%)

School Location

School Details

Status:	Open
School Level:	High School
School Type:	Regular School
Charter Status:*	Public Non-Charter
Virtual Instruction:	No virtual instruction
Shared Time Status:	No
District:	Glenbrook HSD 225
Phone:	(847)729-2000
Website:	http://www.glenbrook225.org/south
Grade Range:	9th - 12th
Total Students:	2,923
Full-Time Teachers (FTE):	227.4
Pupil/Teacher Ratio:	12.9
NSLP Participation:¹	No
Qualified Free Lunch:	N/A
Qualified Reduced Lunch:	N/A

* Charter Schools: A public charter school is a publicly funded school that operates independently under a legislative contract (or "charter") with a state, school district, or designated authorizing entity. Charters grant these schools greater operational flexibility over curriculum, staffing, and budgeting in exchange for strict accountability to achieve performance standards established in their charter agreement.

¹ National School Lunch Program (NSLP): The National School Lunch Program is a federally assisted meal program operating in public and nonprofit private schools. It provides nutritionally balanced, low-cost or free lunches to eligible children each school day based on household income thresholds or community eligibility options (CEO).

Title I Program Overview: Title I, Part A of the Elementary and Secondary Education Act (ESEA) allocates federal financial assistance to local educational agencies and public schools with high percentages of children from low-income families to help ensure that all children meet challenging state academic standards.

Grades Taught

Grade 9 638

Grade 10 755

Grade 11 763

Grade 12 767