Tim is the President of the Montessori Foundation and Chair of the International Montessori Council.
His almost forty years of experience in Montessori education includes twenty-two years as Headmaster of the Barrie School in Silver Spring, MD, his own alma mater (age two through high school graduation).
He has also served as the Director of the Institute for Advanced Montessori Studies and as Head of the New Gate School in Sarasota, Florida. He earned a B.A. in History and Philosophy from Georgetown University, an M.Ed. in Educational Administration and Supervision from The American University, and his Montessori certification from the American Montessori Society.
Tim is the father of three former Montessori students (Marc, Michelle and Caitlin), stepfather to two more former Montessori students (Robin and Chelsea), and the grandfather of a present Montessori student (Hollis). He lives on a small vineyard north of Sarasota, Florida with his wife, Joyce St. Giermaine, their four horses, fourteen dogs, and four Sphinx cats.