The first Montessori school in the Southeast, Springmont, was founded in 1963 in Atlanta. Also in 1963, Cambridge Montessori School was founded in the basement of St. Bartholomew Church in Cambridge, MA, enrolling 50 students. In 1961, Mario Montessori, head of the Association Montessori Internationale(AMI), sent Stephenson as his personal representative to the United States, and was later given his permission to set up a branch office of AMI in the United States, which was established in 1970.[6] The first Episcopal Montessori school in Florida, St. Christopher's By-the-Sea Episcopal Church and Montessori School, was founded in 1968 on Key Biscayne.