top of page


Offering the Support that Our Students Need


The teachers are the heart and soul of the school. The dedication and professionalism they show every day is a testament to their character and level of expertise. They tirelessly are trying to find ways to empower the students to dig deeper into their passions, strive higher with every task, work hard constantly, and ask lots of questions along the way.

Staff: TeamMember


Upper Elementary teacher

Certified O.C.T. Teacher
B.A. in Environmental Science

Mrs. Murray has over 15 years of experience in education, including high school, university teaching, K-6, online, and homeschooling.


Mrs. Murray joined up in September 2021 and has been a phenomenal addition to our school family. An added bonus was that all three of Mrs. Murray's daughters joined school, and have made great friends and are amazing students and individuals.



School Owner & Principal
B.A. in Psychology and Economics
Lower Montessori Certification

Mr. Hewitt is the owner and Principal of Keystone Montessori. He has six years of past outside educational experience, which includes three years owning a Kumon Math & Reading Centre, and three years as a teacher’s assistant in Kindergarten to Grade 3 classrooms within the Simcoe County Board of Education. 



Casa Co-Teacher

Casa and Elementary Music Teacher

Mrs. Geisler holds a Preschool/Kindergarten Teaching Diploma from the North American Montessori Centre.


She comes to us with 13 years teaching experiences as a Casa teacher and directress. In addition, she holds a Bachelor of Science (BSc) in Agriculture from the University of Guelph. Mrs. Geisler teaches music to the Casa and Elementary class using the Orff approach. She has achieved Orff Level II towards the Orff Pedagogy Certification at the Royal Conservatory of Music.

bottom of page