Toronto Montessori Schools, now rebranded to "TMS School", was one of the first Montessori schools in Canada. Founded by Helma Trass in 1961, it still remains the most well-known Montessori school in Ontario. The school is now expanded into a high school and includes students from 18 months (Toddler) to grade 12. The Head of Schools is currently Dr. Glenn Zederayko.