Welcome to Glenbrook South Alumni Association Community Hub

The Glenbrook South Alumni Association is a charitable organization dedicated to fostering lifelong connections among alumni through service, engagement, and promoting health and wellness initiatives that enhance the well‑being of alumni, students, and local residents. 

The Association was formed by a group of Glenbrook South friends from the twentieth century who all agree that GBS is the best high school in the world. We want to maintain our lifelong relationships while giving back and strengthening our communities. 

Together, we are making the best school in the country even better!    

The Association is planning a Fall Fundraiser called Glenbrook Fest. The event is a celebration of art, music, and culture to launch the new association and raise money to promote health and wellness in the school and throughout the community.  Glenbrook Fest will be on September 19. 

Get involved in our community and make a difference. We have a variety of volunteer opportunities available, from organizing our event to supporting our communities.

Some people have more time than money. Others have more money than time than money. If you have any extra of either and want to help support a worthy cause, please consider a donation to help us firmly establish the Glenbrook South Alumni Association and support us in promoting Community Health & Wellness.

The Glenbrook South Alumni Association has recently applied for 501(c)(3) approval but has not yet obtained full IRS NFP approval.  

September 19, 2026, will be the biggest party that Glenbrook South has ever had. 

Live music. Guest speakers. Well known Event Host. All proud GBS Alumni. 

Go Titans!