 Not a CPS parent? No problem. CPS will help you register your child for school at the event. Get ready for a great school year by attending CPS's Back to School Fest at Washington Park Saturday, August 3rd from 11 to 2 o'clock. Mark your calendars for Saturday, August 3rd for the CPS Back to School Fest at Washington Park from 11 to 2 p.m. Free backpacks, school supplies, fun, food, games, and more. Free to attend and enjoy.