According to Johnson's statutes for the school, "the schoolmaster shall teach all those grammar scholars that are brought up in Oakham, freely without pay, if their parents be poor and not able to pay, and keep them constantly to school." The master of the school was to teach Hebrew, Latin and Greek. Of course, although the schooling was free, permanent attendance meant the loss to a family of an income, so not many very poor would have attended, or wanted the education. The master could supplement his income of £24 per year by taking in boarders. Johnson was careful to ensure that his schools were sufficiently endowed. This endowment was confirmed by Royal Charter granted by Queen Elizabeth I.