Third Annual All-Class Alumni Picnic and Barbeque. 10 a.m.-6 p.m., Kenwood High School, track and field, 5015 S. Blackstone Ave., 773-263-5934, $10 donation. A yearly event for Kenwood High School alumni featuring arts and crafts as well as food vendors. Visitors may bring their own grills and chairs. Presented by the Kenwood Alumni Network. Part of the proceeds will go to the school’s endowment.