Glenbrook North High School is one of two comprehensive high schools in District 225, located in Northfield Township, Cook County, Illinois. Glenbrook North serves primarily the Village of Northbrook which is situated approximately twenty miles northwest from downtown Chicago. The predominant occupations of those residing in the community are professional, semi-professional, managerial, proprietary, and sales.

Glenbrook North is accredited by the North Central Association of Colleges and Secondary Schools and by the State of Illinois. Glenbrook North is a member of the National Association for College Admission Counseling and has endorsed the “Statement of Principles of Good Practice.”

The academic school year consists of 37 weeks divided into two semesters. Glenbrook North has a block schedule with classes meeting on alternating days. Each school day consists of four blocks of 90 minutes each. The summer school program at Glenbrook North is six weeks in length.

Glenbrook North has 195 certified staff members with 86% holding a master’s degree or higher. The student-to-teacher ratio is 11.54 to l.