For current college and career readiness efforts to be effective, it is important to recognize the value and contribution of career development activities in schools and take a critical look at the most effective strategies, programs, and research in this area. This integrative review synthesizes research related to the impact of school-based career development on student achievement, retention, post-secondary transitions, and other career-related outcomes. Using an iterative key word search, in multiple scholarly databases including JSTOR, PsycInfo, and EBSCOhost Fulltext Finder, 157 studies published in years 1961-2017 were selected for this review. Findings are examined within the context of college and career readiness. Implications for school counseling research, evaluation, practice, and policy are discussed.