§ 2575-a. Transfer of certain board of education administrative employees' to school clerical services of the board of education of the city of New York. Notwithstanding any other provision of this law to the contrary, any employee who has completed at least twenty years of continuous board of education administrative service, or other service as a member of the board of education retirement system, and having accepted appointment to the school clerical or pedagogical service of the board of education of the city of New York, may continue membership in the board of education retirement system and shall be permitted to contribute to such system and receive credit for services rendered to the school clerical or pedagogical service of the board of education of the city of New York as if such service was education service.