The 1e Montessorischool is the oldest Montessori school within the Montessori Association Haarlemmermeer. The school is located in the Pax neighbourhood. Families attending the 1e Montessorischool do not always live close to the school but often come from several different districts in Hoofddorp. With approximately 220 pupils, it is a cosy and small school. The school has three junior classes, three intermediate classes, and three senior classes. A total of 188 solar panels were installed on the roof of this school.