It is the second-largest school district in the United States, with over 700,000 students. After Proposition 13 in 1978, urban school districts had considerable trouble with funding and LAUSD became known for its underfunded, overcrowded and poorly maintained campuses, although its magnet schools have won countless award and score with the top private schools in the state. Wealthy and upper-middle-class parents placed their children in elite private schools, while many middle-class families left for suburban school districts beyond LAUSD boundaries. Since then, the LAUSD has embarked on an aggressive school construction program to relieve overcrowding.