District 99 offers a six-week in-person summer school program that provides opportunities for students who: Elect to enrich and/or accelerate their regular program; Desire additional flexibility in scheduling courses for the regular school year; and/or Need to repeat a course in order to complete requirements for graduation or to earn credits to advance to the next grade classification.Summer School 2021 will be held at North High School in Downers Grove during the following weeks: Semester 1: June 7-10, 14-17, 21-23 (3-week block) Semester 2: June 28- July 1, July 6-8, 12-15 (3-week block)Tuition for Summer School 2021 will be free for students residing in D99 boundaries, excluding Drivers Education.