Associate Dean of Students
Mr. Sean Garrison
Mr. Garrison has been a part of the Glenbrook community for over 16 years and a member of the State of Illinois educational community for over 30 years. Prior to serving as a Dean at GBS, Mr. Garrison was a science educator (Chemistry, Astronomy, Marine Biology, Geology) and a Science Department Chair. Along with the role in the classroom, Mr. Garrison served as a basketball and baseball coach. Mr. Garrison obtained his Master of Science from Eastern Illinois University along with a Master of Arts in Educational Administration, also, from EIU. Mr. Garrison also completed his course work in a Doctorate in Educational Leadership, along with obtaining his Illinois Superintendent Licence, through Northern Illinois University. However, Mr. Garrison's greatest role throughout his life has been the honor of serving as a dad to his kids, Jon and Julia!