In Massachusetts, as is true nationally, teachers are less racially diverse than students. As of the 2021-22 school year, 87 percent of teachers in the state were White, compared with only 54 percent of students. In response to this disparity, Massachusetts lawmakers have proposed legislation targeting the shortage of teachers of color. In this report, the author uses data on Massachusetts K-12 public school students and teachers to provide evidence on three leaks in the teacher pipeline that policies could target to support teaching candidates of color. The sample consists of Massachusetts public school students from the high school graduating classes of 2003 to 2013 who indicated an interest in teaching by taking the state's Communications and Literacy Skills Test (CLST), which is required for teacher licensure.