Mont. Code § 20-7-201
A library of visual, aural, and other educational media shall be established and maintained by the superintendent of public instruction. The media shall be selected by the superintendent of public instruction on the basis of their usefulness as teaching aids and resources for schools and other educational groups within the state and shall be made available to such schools and groups on a rental fee basis. The rental fees for the use of the materials in the library shall be set by the superintendent of public instruction and shall be deposited in the audiovisual and media library account in the state special revenue fund. The superintendent of public instruction may use these funds, as well as any other funds advanced by a legislative appropriation to the audiovisual and media library account, for the operation, maintenance, enlargement, and other related costs of the library.
§ 20-7-201, MCA