Square and Compasses by Oliver Optic

The principal said a few words to Mr. Darlingby, one of the instructors, as soon as all the rebels had left the schoolroom. The teacher followed the eight boys who had decided not to wear a uniform to the dormitory. He sad nothing, but merely saw that the rebels went to their rooms, as they had been directed. He then called Bates, the old sailor who had been quartermaster and mate under Captain Gildrock for may years, who did any kind of duty at Beech Hill required of him, from running the steamer down to blacking the principal's boots.

The old seaman always obeyed orders, and never asked any questions or made any speeches. Mr. Darlingby stationed him in the hall of the dormitory, and directed him not allow any of the eight boys to leave the building, or more than one of them to come out of his room at a time. Bates knew what discipline was, for he had been thoroughly trained by his employer. The instructor returned to the schoolroom, and reported the orders executed.