Student mobility and school discipline are two prominent challenges in urban school districts. The interaction of gender with school discipline in shaping patterns of student mobility has received little attention. This article examines student mobility patterns across gender and the timing of school changes in Clark County, Nevada. The findings draw attention to discipline-related mobility or the placement of students in alternative schools, especially during the school year. Male students are more likely to switch schools mid-year than female students, and the disproportionate rates of student mobility between male and female students can be explained by disciplinary incidents. Gender is a significant predictor of the destination school quality of discipline-related movers. Policy implications and areas for future research are discussed.