The Expanded Success Initiative (ESI), focuses on the issue of low college readiness among Black and Latino male students--a problem that has persisted in New York City (NYC) even as high school graduation rates have risen. ESI is providing funding and professional development to 40 NYC high schools, aimed at helping them improve outcomes, particularly college and career readiness, among their Black and Latino male students. The Research Alliance for New York City Schools is conducting a four-year evaluation of ESI's implementation and impact. This report, "Changing How Schools Serve Black and Latino Young Men," presents findings from Year 2 of ESI (the 2013-2014 school year), drawing on interviews and focus groups with staff at ESI schools and a set of matched comparison schools, a student survey, and an analysis of student achievement data. Key Findings include: (1) ESI schools are indeed offering programming within these areas, aimed at ESI's target population of Black and Latino young men; (2) Educators in ESI schools reported making changes that extend beyond specific programs, including improved relationships (between staff and students and among students) and more reflective staff practices; and (3) Researchers assessed ESI's early impact on a variety of attitudes, skills, and behaviors (measured by the survey), as well as academic outcomes, such as GPA, credit accumulation, and Regents exam scores. The report explores each of these findings in depth, and provides a look ahead at the next years of ESI and of future evaluation. [For related reports see: (1) "Changing How High Schools Serve Black and Latino Young Men: A Report on NYC's Expanded Success Initiative. Executive Summary" (ED573449); and (2) "Changing How High Schools Serve Black and Latino Young Men: A Report on NYC's Expanded Success Initiative. Technical Appendices" (ED573453).]