Suggesting implications for career education program development and revision, this document is one in a series of five publications reporting results of a career development needs study of four different age levels. In this document, the assessment of career development needs of thirteen-year-olds is presented in three major sections. Section 1 presents an overview of the National Assessment of Career and Occupational Development (COD), explaining the rationale, objectives, exercises, assessment samples, subpopulation data, and possible uses of the career development needs series. Section 2 presents the collected data on career development needs of thirteen-year-olds. The results are summarized and program implications are suggested under five broad objectives: prepare for making career decisions; improve career and occupational capabilities; possess skills that are generally useful in the world of work; practice effective work habits; and have positive attitudes toward work. Also organized by these five objectives, section 3 provides a more detailed description of the COD assessment data, including statistical tables. (BM) Aspect of National Assessment (NAEP) dealt with in this document: Results (Interpretation).