Theories of positive youth development (PYD) regard such development as bases of both community contributions and lessened likelihood of risk/problem behaviors. Using data from the 4-H Study of PYD, we tested these expectations by examining if PYD in Grade 5 predicted both youth contributions and risk behaviors and depression in Grade 6. Results of random effects regression and SEM models indicated that, as expected, PYD in Grade 5 predicted higher youth contributions and lower risk behaviors and depression at Grade 6. There were significant sex differences for contribution (girls had higher scores) and for risk behaviors (boys had higher scores), but not for depression. In turn, the structural model fit was equivalent for boys and girls. Results are discussed in regard to promoting PYD to enhance successful development, or thriving, and to reduce problem behaviors. (Contains 2 figures, 5 tables and 2 footnotes.)