Real estate courses and offerings may be given by any college or university accredited by the Commissioner of Education of the State of New York or by a regional accrediting agency accepted by said Commissioner of Education; public and private vocational schools; real estate boards; and real estate-related professional societies and organizations. No real estate course of study seeking approval may be affiliated with or controlled by any real estate broker, licensed salesperson, licensed or certified real estate appraiser, firm, or company or franchise, or controlled by a subsidiary of any real estate broker, real estate appraiser or franchise.