1961: Jim Hansen arrives at Kents Hill School to teach mathematics. Over the next 36 years, "Hanny" becomes a beloved teacher, mentor, colleague and friend to thousands of students. He provided [students] with the quadratic equation and math induction, juxtaposed with mini lectures on Einstein, Hawking, Martin Luther King, Jr., the Holocaust, Bach, current events or a great film, while providing [them] with a classroom of visual and auditory explosion. (Chig Shuster '55, faculty)
1970: Donald M. Jacobs is appointed Head of School. He oversees the construction of Jacobs Hall, which arrives in 30 to 40 pieces, covering the entire outfield of the baseball field.
1972: A Celestron 10 telescope is installed in the observatory of the Dunn Science Building, which had been completed in 1966.