Welcome to Glenbrook North

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 1.

Historical Achievements

  • Named 2008 Blue Ribbon School by U.S. Department of Education 
  • One of the most awarded schools in the nation by NASA/Student Involvement Program
  • Three Presidential Awards for Excellence in Teaching Science or Mathematics
  • Among the first schools to receive the Excellence in Education Award, U.S. Department of Education
  • Foodstock cited in the Guinness Book of World Records for a canned food structure of nearly 60,000 cans, 2009
  • Siemens Award winner for Advanced Placement in math, science and technology

Parent and Community Support 

  • GBN Parents’ Association along with active parent groups for athletics, band, orchestra, choir, drama, special education, debate and Grad Night.
  • Annually, more than $100,000 in locally funded scholarships awarded to GBN seniors.