Grainne joined RMS in September 1999. After a successful teaching career of eleven years here at RMS, Grainne joined the Administrative Team in July 2010. Five years later after working as Director of Admissions and Assistant Head of School, Grainne assumed the role of Head of School in April 2015. She holds her B.S. from Trinity College, Dublin, Ireland and her Montessori Early Childhood (3-6 year olds) AMS certification from the Princeton Center for Teacher Education. In addition to her professional teaching experience, Grainne has ten years of international management experience in the hospitality industry.