In theory, almost any public function would benefit from more competition. One of the public functions that is most commonly cited in this way is education. Many people believe that the public school system suffers because it has no competition. To remedy this, they want to introduce competition. Some of this competition would come from within the government, from things like magnet schools or school choice within a district. But some of it would come from private firms running things like charter schools. If the schools were to get competition, the theory goes, they would have to improve themselves because otherwise they would lose students and the funding that comes with them.