Peter O’Neill Senior Consultant

Peter brings years of experience to CS&A in leading and advising a wide range of independent schools and school leaders. For two decades, he served as Head of School of Garrison Forest School in Owings Mills, Maryland. With a leadership style grounded in collaboration and communication, he also served as Head of School at Wooster School and as Interim Head of School at Rutgers Preparatory School, Whitby School, New Canaan Country School, and most recently at The Hotchkiss School.

Recognized as one of the country's most outstanding school heads in 2006 by The Klingenstein Center at Columbia University, Peter has served as president of Association of Independent Maryland Schools, and served on the boards of the National Coalition of Girls Schools, National Association of Principals of Schools for Girls, and Connecticut Association of Independent Schools. He serves on the board of the Chatham Conservation Foundation and as the vice chair of the Board of Trustees for The Ethel Walker School.

He is a frequent speaker for professional organizations, including NAIS, CASE-NAIS, and the Association of Independent Maryland Schools, and has chaired and served on numerous school accreditation committees. Peter was elected to membership in both the Headmasters Association and the Country Day School Headmasters Association, and has served as an adjunct faculty member at the Johns Hopkins Graduate School of Professional Studies, where he created and taught a course on independent school governance. Peter received his B.A. from St. Michael’s College and his M.A. from Trinity College, both in American Studies. He joined CS&A in 2017.