This synopsis highlights the main findings from "Investments in Building Citywide Out-of-School-Time Systems," which documents approaches six cities across the country have taken to build, finance and sustain effective citywide out-of-school-time (OST) systems. Developed by Public/Private Ventures (P/PV) and The Finance Project, the synopsis provides detailed information about investments made in the four major strategies used to strengthen OST infrastructure: providing community leadership and vision; improving program quality; expanding access to and participation in quality programs; and financing and sustaining quality programs. (Contains 5 tables and 13 endnotes.) [For the main report, "Investments in Building Citywide Out-of-School-Time Systems: A Six-City Study," see ED507372.]