233.015  Purge of listed courses not taught for 5 years; rules.--The Commissioner of Education shall adopt rules that provide for the conduct of regularly scheduled purges of courses that are listed in the statewide course numbering system or institutional catalog but have not been taught at the institution for the preceding 5 years. These rules must include waiver provisions that allow course continuation if an institution has reasonable cause for having not offered a course within the 5-year limit and an expectation that the course will be offered again within the following 5 years.