(AP) — New figures show that the number of charter schools in Kansas has been declining, with only 11 still operating.

In 2012, Kansas had 15 charter schools, which receive public funding but are usually managed by outside boards or private companies. There were 33 in 2010.

Charter school supporters say they’re intended to provide competition to the public school system, offering different management and a different educational approach. Supporters of traditional schools say while charter schools can offer an alternative for some students, they also siphon off public funds that could be used to improve all schools.

Jessica Noble, who coordinates charter and virtual school programs for Kansas, said many school districts are choosing to convert the charter schools back into regular schools.