They are a new program that will provide accreditation for Montessori schools. Mr. Ball's advice is excellent. The 3 courses I speak of take approx. Most teachers welcome questions. My first suggestion would be to discern what type of Montessori school your school is.
Some independent schools remain independent for specific reasons.
Others simply don't meet the standards. Parents should be aware of and comfortable with the school's position and philosophy. Every Montessori course I am familiar with are one to two years in length. You are paying the tuition for a Montessori education program and have every right to expect that a school that presents itself as a Montessori school is just that. A quality Montessori program has to begin with appropriately train teachers.