§ 15-b. Education. The present director of vocational education shall be the director of education with the powers and duties of the director of education and hereafter shall be appointed by the commissioner. The director of education, at any time appointed, shall be a person whose education, training and experience shall cover fields of penology and of professional education. The educational qualifications shall include the satisfactory completion of three years of graduate work in education, penology, and allied fields. The head of the division of education shall have the direct supervision of all educational work in the department of corrections and community supervision and shall have full authority to visit and inspect all institutions of the department to observe, study, organize, and develop the educational activities of such institutions in harmony with the general educational program of the department. He or she shall be responsible to the commissioner and deputy commissioner designated by the commissioner.