N.Y. Education Law 3001 – Qualifications of teachers
§ 3001. Qualifications of teachers. No person shall be employed or authorized to teach in the public schools of the state who is:
1. Under the age of eighteen years.
2. Not in possession of a teacher's certificate issued under the authority of this chapter or a diploma issued on the completion of a course in state college for teachers or state teachers college of this state.
The provisions of this subdivision shall not prohibit a certified teacher from permitting a practice or cadet teacher enrolled in an approved teacher education program from teaching a class without the presence of the certified teacher in the classroom provided the classroom certified teacher is available at all times and retains supervision of the practice or cadet teacher. The number of certified teachers shall not be diminished by reason of the presence of cadet teachers.
3. Not a citizen. The provisions of this subdivision shall not apply, however, to a noncitizen teacher now or hereafter employed, provided such teacher shall make due application to become a citizen and thereafter within the time prescribed by law shall become a citizen. The provisions of this subdivision shall not apply, after July first, nineteen hundred sixty-seven, to a noncitizen teacher employed pursuant to regulations adopted by the commissioner of education permitting such employment. The citizenship requirements of this subdivision shall not apply to a noncitizen teacher now or hereafter employed whose immigration status is that of a lawful permanent resident of the United States and who would otherwise be eligible to serve as a teacher, or to apply for or receive permanent certification as a teacher, but for the foregoing requirements of this subdivision.