What do we know about the impact and implementation of Career Academies? This paper provides answers to this question. Career Academies have been around for over 30 years. Their original design stressed facilitating the school-to-work transition. In the early 1990's the focus began to shift to preparing participating students for both college and the world of work. In its current form, Career Academies is an intervention that generally includes the following components: (1) School-within-a-school, that provides focused interpersonal support for students; (2) Combination of academic and career-oriented curricula, using a career theme to integrate the two; and (3) Partnerships with local employers to provide students with career development and work-based learning opportunities. Educators and policymakers considering this approach should read and discuss the research and evaluation for what it can offer about the kinds of impacts that might be possible. It is also important to learn what impacts were desired but not realized. Finally, it is important to understand as much as possible about the implementation challenges that have been experienced by others and the conditions under which this innovation might fail. Information on this intervention is provided in two parts: Information the researchers found on impacts and information they found on implementation. An annotated bibliography is included. (Contains 1 table and 2 footnotes.)