The infant, toddler, preschool, elementary, and adolescent levels offer interesting career choices for working with children of different ages. But beyond teaching, there are many Montessori career options not commonly known. An experienced Montessori teacher can become a program director, working with Montessori teachers to coordinate the curriculum. With a little bit of administrative know-how, a principalship is still another option. All-day Montessori programs provide a different kind of institutional management challenge with possibilities for a more homelike setting and longer hours of operation.

Many Montessorians choose to return to school for advanced degrees in education, the humanities, child development, special education, psychology, the sciences, etc. Some colleges, such as Loyola College in Maryland (Baltimore, Maryland) offer graduate credit for Montessori training. More and more Montessorians are going into university academics to do research on how children learn. Others like to write or speak about their teaching experiences. There are many Montessori conferences and publications competing for good presenters, writers, and consultants. Museum education departments appreciate help from Montessorians. Children's museums, with their "please touch" policy, are natural extensions of the Montessori "hands-on" approach. Media and software designers also crave good input about children from Montessorians. Montessori teachers with a horticultural background make excellent consultants for children's gardens.