Consider the humble lunch as one of your most powerful teaching tools. From the first day of school, Ricky was one of my most difficult students. Defensive, angry, and sensitive, this 7-year-old was constantly putting up walls and “testing” the adults in charge to see if we would respond to his needs. With the lack of a guidance counselor or a full-time school psychologist in the school, I knew that I had to find a way to connect with him, or we were going to have a disastrous school year.

When a classmate says Min Jee’s Korean lunch is “how everyone got sick,” will her friends speak up?

Role-playing can help planners counter resistance to Mix It Up.

This student’s Mix It Up at Lunch journey paid off in happy, social dividends.

As we planned for Mix It Up at Lunch Day last year, I felt a deep sense of nervousness. I wasn’t worried about getting the kids to talk and chat. I teach at a small school, and the students are usually friendly with one another.

Teaching Tolerance has named 77 schools—25 more than last year—from across the country as Mix It Up Model Schools for their exemplary efforts to foster respect and understanding among their students and throughout their campuses during the 2011-12 school year.

At first the idea sounded too simple to be anything worthwhile. Have students sit with someone new at lunch? How much effect could that really have? After years of perusing and using Teaching Tolerance’s other resources, I finally felt compelled to try to Mix It Up.

I lean against my classroom door, fielding questions about last night’s homework and passing out early morning hellos. I watch students disperse into their assigned first-period classes. As I steal a quick sip of my morning coffee, I find myself pausing at this thought: A supposedly unbiased computer system serendipitously placed our students into their respective classes, but is this all there is to mixing it up? No.