The first Director of Public Prosecutions was appointed while Sherlock Holmes was living with Doctor Watson at Baker Street but Justin is correct to say that the CPS was not created until about a century later – well after this alleged crime had been committed.
Be that as it may, however, my point remains undiminished with the passing of time.
The point is not ‘Did the headmaster injure the boy?’ but rather ‘Did the infliction of those injuries constitute a crime?’