ยง 283. Functions of school library systems. The functions of school library systems shall include but not be limited to: (a) creating and developing a union catalog of materials listing the resources of each participating school library; (b) developing a plan which will aid each participating school library in cooperative collection development; (c) adopting and implementing an interlibrary loan policy and program among participating school libraries; (d) assuring a method of effective delivery of library materials within the system; (e) promoting development programs and continuing education for staff of participating schools; (f) encouraging awareness of the resources and services available in participating school libraries; and (g) cooperating with other library systems in resource sharing and other activities.