Illinois Statutes Chapter 75. Libraries § 12/10. Definitions

(1) serves, either directly or through contractual services provided by another library, the basic information and library needs of its patrons through a bibliographically organized collection of library materials that has ongoing financial support and is accessible centrally;

(2) is open at least 15 hours per week; and

(3) is staffed by one or more employees serving as librarians working a minimum of 15 hours per week.