The governing body of every school district having voted in favor of furnishing free textbooks or electronic textbooks under the provisions of Sections 28--14 through 28--19 shall provide, at the expense of the district, textbooks or electronic textbooks for use in the public schools and loan them free to the pupils. Textbooks so furnished shall remain the property of the school district. The governing body shall also provide for the sale of such textbooks or electronic textbooks at cost to pupils of the schools in the district wishing to purchase them for their own use.
105 ILCS 5/28-15