Private schools must be examined periodically by their professional peers in independent education in order to become accredited. These highly-respected agencies, which have a long and distinguished history of service to private education, grant a certification of competency, authority, and credibility to independent schools. They determine that the school is doing what it represents itself to do, that it is a viable educational institution, and that it is operating in an ethical and professional manner.

Alexander Montessori School is accredited by the following state, national, and international agencies: