105 ILCS 5/28-21
The State Board of Education shall require each publisher of any printed textbook or electronic textbook that is furnished at public expense under Sections 28-14 through 28-19 and is first published after July 19, 2006 to furnish, as provided in this Section, an accessible electronic file set of contracted print material to the National Instructional Materials Access Center, which shall then be available to the State Board of Education or its authorized user for the purpose of conversion to an accessible format for use by a child with a print disability and for distribution to local education agencies. An "accessible electronic file" means a file that conforms to specifications of the national file format adopted by the United States Department of Education. Other terms used in this Section shall be construed in compliance with the federal Individuals with Disabilities Education Act and related regulations.
105 ILCS 5/28-21