We recognize that out-of-school time (OST) has various definitions across teaching and learning contexts. For this grant program, we define OST as times when young people are not engaged in formal school-day learning that is led or co-led by the school. We consider youth to be out of school during the following times: non-school days (e.g. weekends), before and after school on school days, summer and holiday breaks, and during field trips to locations outside of school. OST programs and sites may include afterschool programs, parks, libraries, community-based organizations, and others.