As we think about current religious diversity and conflict in U.S. schools, it is important to note that religious conflict is not a new phenomenon in the history of U.S. schooling. This article briefly outlines the current and historical connections among religion, ethnicity, and K-12 education in the U.S. in order to note its persistence as well as possible directions for change so that schools can be more equitable for all students. (Contains 1 figure and 2 notes.)