Support WBURKids Who Are Time-Crunched At School Lunch Toss More And Eat LessMaria GodoyAllison AubreySeptember 24, 2015 ShareLonger lines in the cafeteria and shorter lunch periods mean many public school students get just 15 minutes to eat. Yet researchers say when kids get less than 20 minutes for lunch, they eat less of everything on their tray. (iStockphoto)