Kathleen, or Ms. Saint Léger, is originally from Port-au-Prince, Haiti. She studied at St. John’s University and Teachers’ College at Columbia University, where she received her degree in Developmental Psychology with a minor in Spanish. 
She worked with children ages five to eighteen in psychiatric hospitals as a mental health counselor. She discovered Montessori when her first daughter was of school age.

She was in awe of the methodology as she saw the growth in her child, which prompted her to take the training. This is her 25th year as a Montessori teacher, 24th in Celebration. She is certified in Primary (3-6), where she taught for 9 years, Lower Elementary (6-9) for 5 years, Upper Elementary (9-12)  for 6 years and Erdkinder for the past 4 years. Kathleen holds a Level 1 (3-6) certification from the Association of the Catechesis of the Good Shepherd, which applies the Montessori method to religious education. She presently teaches Math and Science in Edrkinder (12-18) in addition to farming with the students. The fruits, vegetables, and eggs the farm will produce are part of the business run by the students. 

Additionally, Kathleen has served as a Teacher Trainer for individuals taking Montessori teacher training. She is certified to facilitate Jane Nelson’s positive discipline program. Kathleen has three children, Bryana, Brian, and Britnie, who have all attended Montessori throughout their education. Kathleen speaks French, Creole, Spanish (enough to not get lost in a foreign country), and is in the process of learning to speak Portuguese. She believes that every child can thrive in a Montessori environment.