This report from Chapin Hall presents a study using data from a large sample of youth from California child welfare records to estimate the impact of extended foster care on postsecondary education outcomes. The sample includes youth who were in the child welfare system before and after the state of California extended foster care to age 21. The study looks at three outcomes: enrollment by age 21, persistence by age 21, and the number of semesters completed by age 21. The researchers found that extended foster care increases the likelihood that youth under supervised care will enroll in postsecondary education before turning 21 but does not increase the rates of persistence or the number of semesters completed among this youth population. (author abstract modified)