We conducted an analysis of the secondary transition qualitative and quantitative research literature to build comprehensive constructs and lists of student nonacademic behaviors associated with post–high school employment and education. From a pool of 83 initial quantitative and qualitative studies, 35 met the inclusion criteria, and the analysis of these yielded 10 constructs of student nonacademic behaviors associated with post-school education and employment for high school students with mild to moderate disabilities. The constructs are presented along with lists of representative behaviors, implications for their use are discussed, and the next steps in building a new transition assessment using these constructs and behaviors are described.