The Grosse Pointe South High School Choir Boosters 4th Annual Garage Sale Saturday, September 22, 9AM to 4PM. Donations will glady be accepted and pick ups can be arranged. Please call the Choir office at 313-432-3638. The GP South HS Choir Boosters are a 501(c)3 non profit. All proceeds go directly to benefit the Choir program at Grosse Pointe South High School.