Findings from a four-year longitudinal evaluation of two publicly-funded California after school programs, After School Education and Safety (ASES) and 21st Century Community Learning Centers (21st CCLC), that examine program characteristics and implementation, local program partnerships, the relationship of program participation to student behavior and academic outcomes, and stakeholder satisfaction with the programs, based on analyses of four separate study samples that variously comprise longitudinal administrative data, program observations, student surveys and focus groups, and program staff surveys, interviews, and focus groups