§ 40-a. Inquiry concerning religion or religious affiliations of person seeking employment or official position in public schools prohibited. No person, agency, bureau, corporation or association employed or maintained to obtain or aid in obtaining positions for teachers, principals, superintendents, clerks or other employees in the public schools of the state of New York, and no individual or individuals conducting or employed by or interested directly or indirectly in such an agency, bureau, corporation or association, and no board of education, trustee of a school district, superintendent, principal or teacher of a public school or other official or employee of a board of education, shall directly or indirectly ask, indicate or transmit orally or in writing the religion or religious affiliation of any person seeking employment or official position in the public schools of the state of New York.