The first school crest was that of the Gunn clan. It featured a Scottish sword in a clenched fist and with the Latin motto, Aut Pax, Aut Bellum, Either Peace or War.
- Headmaster Ogden D. Miller H'69 P'50 '54 '55 formalized and redesignated the crest to include a heraldic motto, Vir Bonus Semper Discipulus Est, A Good Man is Always a Learner, which appeared on a ribbon below the shield.
- In the 1990s, Roger Netzer ’71 had his son restate the motto to include women when he made a presentation to his Legal Society.
- In the 2000s, under the aegis of Head of School Susan Graham H’12, Andrew Sacks ’86 and his firm helped the school design a more modern version of the crest with the motto imprinted on the shield.
- In 2020, with the approval of the Board of Trustees and under the direction of Head of School Peter Becker, a bold new crest was unveiled with the renaming of The Frederick Gunn School. For the first time, it includes the school motto in English, so that more members of our community will regularly contemplate its meaning.