We examined the effects of a teacher coaching program on discipline referrals using records from 7,794 secondary U.S. classrooms. Some classroom teachers took part in a trial: They were randomized to receive intensive coaching in a focal classroom or to form a business-as-usual control group. The remaining teachers taught in the same schools. Previous research suggested that the coaching program was associated with increasing equity in discipline referrals in focal coached classrooms (Gregory et al., 2016). The current study addressed the generalizability of effects from teachers' focal coached classrooms to diverse classrooms in their course load. Results suggested that the coaching program had no generalized effects on reducing referrals with African American students or racial referral gaps in classrooms with coached teachers, relative to the control teachers and the other teachers in the schools. We offer implications for coaching programs and directions for equity-oriented efforts to reduce racial discipline gaps.