Montessorian
/ˌmɒntɪˈsɔːrɪən/adjective
Of, relating to, or designating the Montessori educational system or approach.
noun
An advocate or practitioner of Montessori teaching methods.
Origin
Early 20th century; earliest use found in The San Antonio Light. From the name of Maria Montessori + -an; compare -ian.