Classes have begun in two year-round high schools in Los Angeles that are part of Mayor Antonio Villaraigosa's Partnership for Los Angeles Schools. The schools are Roosevelt in Boyle Heights and the Santee Education Complex, south of downtown. Ten schools have chosen to become part of Villaraigosa's school-reform effort. This experiment, which takes place at some of the district's lowest-performing schools, has a mandate to help more than 18,000 students. The vast majority of them perform below grade level; more than half are destined to drop out before graduation.