Sherri has over 20 years of experience as a Montessori Head of School. She is a mother of three children and in 1995, when she was looking for a program for her child she began her lifelong work in Montessori Education. Sherri has opened and run Keystone Montessori and Creo Montessori, two highly successful AMI Montessori schools, in Arizona. Sherri holds an AMI Diploma in both Primary (ages 3-6) and the Orientation to Adolescent Studies. Additionally, Sherri helped to found the Southwest Institute of Montessori Studies (SIMS), the nonprofit AMI Montessori teacher training center in Arizona, in 2011.