All-Community Back-to-School Party scheduled for Saturday, August 29th from 6-9 pm at Glenbrook South High School Posted on August 8, 2015February 23, 2016 by Jennifer Han Havill Please join us for the All-Community Back-to-School Party on Saturday, August 29 from 6-9 at Glenbrook South High School. The event is FREE and open to all community members. See you there!