 in 1867.In 1866, Benjamin Hall Kennedy resigned the headmastership of Shrewsbury School, and at the age of 25, Moss was chosen to succeed him; he remained in the post for forty-two years, until he retired in 1908.Whilst headmaster, he supervised the movement of the school from its town centre site to a new location, at Kingsland, on the outskirts of the town in 1882.