Montessori Teacher Certification Explained

AMI vs. AMS

Both are respected, and many schools hire from either.

• AMI was founded by Maria Montessori and follows her original approach closely. Training is offered through AMI training centers.
• AMS is a U.S.-based organization whose affiliated programs blend Montessori principles with some flexibility in format. AMS credentials typically take 1 to 2 years and include coursework plus a practicum. AMS does not affiliate fully online programs.

Other MACTE-accredited programs exist outside AMI and AMS. If a school lists a preference, follow it.

Credential levels

Montessori credentials are tied to an age range:

• Infant and Toddler: birth to about 3
• Early Childhood: about 3 to 6 (the most common level for preschool teachers)
• Elementary I: about 6 to 9
• Elementary II: about 9 to 12
• Secondary: adolescents
• Administrator: for school leaders

Do you need a degree?

AMS programs generally require a bachelor’s degree. AMS also offers an associate credential at the Infant and Toddler and Early Childhood levels for people without one. Check each program’s requirements, since they vary.

Does a Montessori credential count toward state requirements?

In many states, yes. Several states list Montessori certification as one way to meet lead teacher or director qualifications, including Michigan, New Hampshire, New Mexico, North Dakota, and Ohio. You still need to meet your state’s other requirements, such as age, training hours, and screenings. See our guides to teacher requirements by state and director requirements by state.

How to choose a program

1. Pick your age level first.
2. Confirm the program is MACTE-accredited, and check whether it’s AMI- or AMS-affiliated.
3. Compare format (in person, hybrid), length, cost, and practicum requirements.
4. Ask local Montessori schools which credentials they prefer and whether they sponsor training.

Sources: MACTE, AMS teacher education, AMI/USA