Tessie holds a bachelor’s degree in graphic design from the Universidad Iberoamericana and a bachelor’s degree in Early Childhood Education. She received her AMI Children’s House Diploma from the Montessori Institute of Montreal in 1997 and her AMI Elementary Diploma from the Montessori Institute of British Columbia.

Tessie worked for more than twenty years in both 3-6 and 6-12 environments.

She was a student at a Montessori school for eight years.

She is currently the Elementary Director of Training at the Montessori Stoppani Institute, Montessori Institute for Elementary Guides in Mexico City, and FAMM in Buenos Aires, Argentina. She has also delivered orientation and assistants internationally.

She has also participated in AMI training courses at the Montessori Institute of Milwaukee and Montessori Institute of Atlanta, in the United States and has extensive experience as an international examiner.

She is also a member of the Trainers Group of AMI (Association Montessori Internationale) collaborating in the training of new Trainers since 2021.