This exploratory study investigates the ways in which secondary U.S. history teachers who attended two iterations of a teacher professional development workshop, focusing on the history of school desegregation in Virginia, planned to teach the history of school desegregation through historical inquiry. Conceptualizing the history of school desegregation as difficult history, the authors conducted the content analysis of 23 written lesson plans generated by workshop participants. The historiography of school desegregation, and research on four dimensions of historical inquiry such as (...) Change and Continuity, Causation, Multiple Perspectives and Historical Sources, guided the data analysis. The findings suggest that teachers in this study were most likely to design their inquiry around Causation, framing the history of school desegregation within the classical timeline of the Civil Rights Movement, which begins with the Brown v. Board of Education decision (1954) and ends with the Civil Rights Act of 1968. What was often absent in these inquiries was Massive Resistance, the backlash against the Brown v. Board of Education decision, collective and political actions of African American communities to implement the Brown decision, and varying perspectives within African American communities as well as Whites who opposed the Brown decision. Implications for theory and practice are discussed. (shrink)