Any teaching staff member employed by a board of education or an approved private school for the disabled, who shall, without the consent of the board or, in the case of an approved private school for the disabled, the board of directors of the school, cease to perform his duties before the expiration of the term of his employment, shall be deemed guilty of unprofessional conduct, and the commissioner may, upon receiving notice thereof, suspend his certificate for a period not exceeding one year.
As used in this section, "approved private school for the disabled" means a private entity approved by the Department of Education to provide special education and related services to students with disabilities who have been placed by the district board of education or charter school responsible for providing their education.