Several Summit Hill Elementary School District 161 parents said transportation problems have plagued the start of school with buses arriving nearly two hours late in the morning and buses returning back to school in the afternoon forcing parents to pick up their children. Aggravated parents in Mokena and Frankfort, who said they and their children were stressed out due to the transportation troubles, called and emailed the Daily Southtown and shared messages they received from the school district both Thursday and Friday. A text message Thursday, the first day of school for kindergarten, went out at 5:27 p.m.