Joint use agreements facilitate a partnership between two or more entities, often school districts and local government agencies (e.g. parks and recreation or nonprofit organizations, to open up spaces such as playgrounds, athletic fields, pools, and gymnasiums to the community outside of school hours or to open up community facilities to schools at a reduced cost or for free. Joint use partnerships can be formal (based on a legal document) or informal (based on a handshake), but formal agreements offer increased protections for both the facility and the community group using the facility. Since school staffing can change over time, personal relationships are not the most secure way to guarantee access to facilities into the future. A formal agreement can also help prevent problems related to maintenance, operations, liability, ownership or cost from arising.