twelve o'clock
`` You will have to learn punctuality here , '' she said . `` Any girl who is late for a class loses an order mark . Now be quick and get on with this arithmetic paper . I can only allow you till twelve o'clock for it , and then you must begin the grammar . '' Patty obeyed in silence , feeling much subdued . It was rather hard , she thought , that when she was still so new and strange she must be scolded for not keeping the rules of the school . She had not really known that she was expected to hasten back to her examination at the sound of the bell , and had , in fact , been waiting for Miss Rowe to come and fetch her .