One of the greatest challenges to the health of the public charter school movement is access to adequate facilities in which the schools operate. Public charter school facilities are rarely funded on par with school district facilities. Over the years, more states have come to realize that they have an obligation to ensure that all public school children--district and charter--have access to adequate school buildings. While equal facilities funding for all public school children is the ideal solution to the facilities challenges facing charter schools, making available underused school district buildings is growing in popularity as a way to provide public charter schools with quick access to facilities while putting shuttered taxpayer-funded facilities back in operation for the purpose they were intended, to educate children. Currently, 27 states have enacted policies that try to provide charter schools with better access to district facilities.