Tessie Schjetnan is the Director of Training at the Instituto Montessori para Guías de Taller, in Mexico City. She holds AMI diplomas for Children's House and Elementary and degrees in Graphic Design and Education. Ms. Schjetnan had taught children from three to twelve years for twenty years. Tessie attended a Montessori school until age 14. She has given workshops in Mexico and internationally on a variety of Montessori topics.