Idaho Code § 33-2601
It is hereby declared to be the policy of the state of Idaho, as a part of the provisions for public education, to promote the establishment and development of free library service for all the people in Idaho. It is the purpose of this act to assure an informed electorate by enabling the provision of free local library service, in the present and in the future, to children in their formative years and to adults for their continuing education. To carry out the purpose of this act, an independent, nonpartisan board shall govern the library.
Every library established in this chapter shall be forever free for the use of the residents of the city, always subject to such reasonable rules and regulations as the library board may find necessary to adopt.
Idaho Code § 33-2601