Leadership Bios

John Kowalik became Potomac’s 14th Head of School in 2013 after a decade as Headmaster of The Peck School in Morristown, N.J.

Raised in the Boston area, John is a graduate of Archbishop Williams High School in Braintree, Massachusetts, and a member of the school's athletic and academic halls of fame. At Williams College, he majored in political science and captained teams in football and winter and spring track. He also has completed the Executive Management Program at Dartmouth’s Tuck Business School and earned a master’s degree in educational administration from Columbia University.

John spent 19 years at Delbarton School in Morristown serving as teacher and later Dean of School and Assistant Headmaster. As head football coach for 16 years, he compiled a 138-29 record and won two state titles and nine conference championships. During his tenure at Peck, the school maintained a rigorous academic program distinguished by excellent teaching and developed a nationally recognized character program.

In 2009, Williams College profiled John in one of its publications.

John and his wife, Carolyn, have four children: Jack, Liza, Mark, and Sara.