Deborah Costello

Deb Costello earned a BA in Mathematics from St. Olaf College and a Masters in Liberal Studies from Lake Forest College.  She spent seven years

Marc Dancer

After graduating from Deerfield in 1979, Marc Dancer spent a post-graduate year at Harrow School in England. He then earned his BS from St. Lawrence

Janet Gray

Janet’s (“Callie’s”) passion for education started by teaching summers at Choate Rosemary Hall and Phillips Academy.  When she graduated from Washington & Lee with a

Sean Keller

After graduating from Harvard with a degree in mathematics, Sean spent three years teaching at Avon Old Farms School, and then moved to Deerfield Academy

Sheryl Koyama

Sheryl grew up in Iowa and graduated from St. Olaf College with a major in mathematics and a minor in Asian Studies in 1983. After

Kristen McVaugh

Kristen joined Deerfield in 2009, after graduating from Bowdoin College with a degree in economics and mathematics. She was a four-year contributing member of the

Nina Otterson

Nina graduated from Columbia University with a Ph.D. in Chemical Engineering. She has worked in boarding schools for 18 years teaching math and coaching girls’