This article chronicles the search for and development of an outcome measurement tool for teen parents receiving community-based wraparound services. The criteria for selecting functional assessment tools available in the literature is presented along with the barriers experienced in using two of these well-cited tools. The rationale for in-house tool design with a population crossing adolescent and adult development, the domains, sample items, pilot test results, and beginning evidence of inter-rater reliability (0.87) are presented. (Contains 1 table and 5 figures.)