Prior to the establishment of a private business or trade school and the issuance of a certificate of approval therefor, no person shall advertise such a school or solicit prospective students for such a school unless such person has applied for and received from the Department authorization to conduct such activity.

14 Del. C. 1953, § 8514; 58 Del. Laws, c. 544; 71 Del. Laws, c. 180, § 190