Lee Havis is the Executive Director of the International Montessori Society. Havis has contributed to a number of Montessori texts, including the introduction to Maria Montessori: Her Life and Work by E.M. Standing; the foreword to The Essential Montessori by Elizabeth Hainstock; and the foreword to Why Montessori? by Aisha Abdullah. He is also author of the Evaluation of Basic Skills, standardized test materials for children aged 3-18.