For many years, schools in the Bronx have faced challenges related to teacher recruitment and retention, as well as student achievement. In 2017, to address these issues, the New York City Department of Education (NYC DOE) launched the Teacher and School Leaders Bronx Human Capital Initiative (TSL). TSL was designed to help build a "highly prepared, committed and diverse" teaching pipeline, retain effective teachers, and support strong recruitment and retention practices in 363 schools across the borough. Upon the conclusion of TSL's programming in the 2019-20 school year, the Research Alliance for New York City Schools undertook an evaluation to examine TSL's impact on teacher and student outcomes. This brief summarizes the findings.