The Missionary Training Institute was later granted a charter by the New York Board of Regents and the school's curriculum was registered by the State Education Department in 1944. In 1953, the school was authorized to confer the Bachelor of Science degree and, in 1961, the Bachelor of Arts degree. In 1960, the corporation was authorized to conduct a post-baccalaureate program as the forerunner of the Alliance Theological Seminary. Nyack first received school accreditation in 1962 from the Middle States Association of Colleges and Schools. In 1963, the school became a member of the American Council on Education.