Combined Jewish Philanthropies will expand its successful affordability program that has made it possible for more families to send their children to Jewish Day School. The program, “Discover Day School” now offers qualifying families “CJP Discover Day School Checks” to cover up to $6,000 toward tuition at any of Greater Boston’s 10 K-8 Jewish day schools. CJP launched the Discover Day School program last year, offering $4,000 (up to 25 percent of tuition) for families enrolling their children in Jewish Day School kindergarten.