We Americans don't seem to agree about much these days. Political discord reveals deep cultural divides, one of which runs along the Mason Dixon Line. In Massachusetts, students freely refer to southerners as "racist hillbillies," and many southern students imagine their northern counterparts to be "rude" and "bossy." We know this because our middle school history students are engaged in a lively collaboration that binds students in Alabama, Massachusetts, Tennessee, and Vermont. Through a mock Supreme Court case, students at our schools collaborate to decide whether a Tennessee student had the constitutional right to bring a Confederate flag to school. Rights, race, and the Civil War feature prominently in our dialog, although the historical content of our exchange is merely a vehicle to instill open-mindedness in our students. The primary vehicle of communication between students from "the North" and those in "the South" is a blog, where, over the past couple of years, students have exchanged their perceptions of the "other" across the Mason Dixon Line, in the process dismantling some sturdy misconceptions. >>Read more.