The Rhein-Main International Montessori School (abbreviation: RIMS) is a private school and one of two secondary schools in Friedrichsdorf, Hesse, Germany. The school includes a Kindergarten, primary education and a Gymnasium. This Montessori school, as one of few international Montessori schools, it unites the whole spectrum of the Montessori method from the Kindergarten, the primary education to Gymnasium in one building.