 He was graduated from Colby College, Waterville, Maine, in 1929 and from Teachers College (summers) (Columbia University), New York City, in 1937.Merrow was an instructor of science at Kents Hill School in Maine in 1929 and 1930 and at Montpelier Seminary from 1930 to 1937.He served as assistant headmaster of Montpelier Seminary from 1935 to 1938.