The District of Columbia Public Charter School Board monitors the 52 public charter schools in the city. Due to the perceived problems with the traditional public school system, enrollment in public charter schools had by 2007 steadily increased. As of 2010, D.C., charter schools had a total enrollment of about 32,000, a 9% increase from the prior year. The district is also home to 92 private schools, which enrolled approximately 18,000 students in 2008. The District of Columbia Public Library operates 25 neighborhood locations including the landmark Martin Luther King Jr. Memorial Library.