Hancock School was Lexington's first centralized grammar school and first architect-designed school building. Hartwell and Richardson rendered their Richardsonian Romanesque building with chateauesque roof in red brick and decorated it with patterned brickwork and sandstone trim. The main facade is a balanced composition with separate entrance porches and stair towers for boys and girls. In justifying the cost, the building committee stated that “correct proportions and architectural taste not only have an educating influence on boys and girls, but tend to elevate the tone of the whole community.” Other suburban towns chose this popular idiom for school buildings in the period. In 1978, the interior of Hancock School was converted to eighteen condominium units.