The basketball players sit in a corner of the cafeteria. The rockers hang out near the stage. The ditchers and smokers congregate near the school gates. The JV football players and cheerleaders? They're near the field. This is how students at California's Hawthorne High described the typical lunch period at their school. In doing so, they also made the unspoken rule clear: Stick to your own kind. But last fall, Hawthorne's students broke out of their rigidly segregated habits. They answered the call of Mix It Up at Lunch Day, a national event sponsored by "Teaching Tolerance" that asks students to break bread with someone new. This article shares some tips and ideas on how to make Mix It Up at Lunch Day a success.