On the school's centennial year of 1955, the State of Michigan officially designated the school as a university even though Hannah and others felt it had been one, in fact, for decades. M.S.C. thus became Michigan State University of Agriculture and Applied Science. The State of Michigan did not allow the university to remove its "agriculture" moniker until the ratification of the Michigan Constitution of 1964. With this enactment, the university's governing body changed its name from the State Board of Agriculture to the Michigan State University Board of Trustees. Since 1964, the school has been known simply as Michigan State University.