it was made illegal. Through the years the government has relaxed the restrictions on private education by increasingly allowing more individuals and organizations to offer private education until the ban was ruled unconstitutional in the 1990s. Korean courts have ruled that it may violate the constitution for the government to limit the amount of money hagwons can charge. In early 2008, the Seoul government was working on changes to the regulations to allow hagwons to set their own hours, citing individual choice as trumping regulation. However, the government reversed its position five days later. The regulations were criticized as ineffective because the city council possessed limited resources to monitor and enforce them. Along with these restrictions, hagwons also had to disclose their tuition amounts to the government so people could complain if the schools attempted to raise the tuition. The licenses of hagwons caught running false advertisements will be revoked. Hagwons are required to issue cash receipts. In July 2009, to help catch violators of these new regulations, the government started a program to reward people who reported them. The regulations were intended to reduce the cost of private education. However, some hagwons added weekend classes to compensate for shorter weekday classes. Other parents have sought out private tutors to make up for lost study time. Other hagwons simply ignored the regulations. It was reported in April 2009 that 67 percent of hagwons sampled were found to have overcharged for tuition. Forty percent were found to have charged parents over two times the registered tuition amount. In March 2008, the government prohibited school teachers from creating test questions for hagwons. It had been found that some teachers were leaking tests and test questions to hagwons, giving the students who attended those schools advantages when it came time to take the test. A petition was made in October 2009 by parents, teachers, students and hagwon owners to challenge the government's legislation regarding hagwon closing times in Seoul and Busan. The constitutional court ruled that the laws did not violate the constitution. The restriction was put in place for Seoul and Busan in the summer of 2009. In making the ruling the court said, "Because it’s important to secure sleep for high school students to overcome fatigue and for the sake of their growth, it’s difficult to say that [the ban] excessively restricts basic rights." In April 2010 it was reported that