This Statistics in Brief examines the patterns and characteristics of individual involvement in community service activities from high school through early adulthood. Using data from the National Education Longitudinal Study of 1988 (NELS:88), this Brief describes the characteristics of young adults who volunteered, when they volunteered, why they volunteered, and for which types of organizations they volunteered. Based on data from the NELS:88 1992 sample of 12th-grade students--who were asked about their high school volunteer service for the period 1990-92 and then re-interviewed in 1994 and again in 2000--this Brief also examines whether high school volunteer service was related to volunteering 2 years and 8 years after their scheduled high school graduation. (AMT)