Whereas interest has been studied extensively in relation to the daily context of school, less is known about interest in out-of-school contexts. Other research has studied similar phenomena across in- and out-of- school contexts, but how adolescents engage in interests across contexts is particularly unexplored. Only a few scholars have addressed engagement in a particular interest in both in- and out-of-school contexts. These scholars were guided by an ecological, life-wide approach, meaning they included both in- and out-of-school contexts in their research on learning and development. The purpose of the present study is to begin to fill this gap by studying adolescents’ experience of interest across family and peer contexts.