The major point really revolves not around students as a whole , but around certain groups of students. Whilst it is probably fair to say in general-that fewer girls either committed offences worthy of say , the cane than boys, and equally that there are more girls psychologically unsuited to that type of punishment, it is not an absolute judgement.
Indeed there are certain groups if you like sub groups- of girls who tend to commit certain offences just as predictably as boys, that is to say , bullying, theft and lying. Indeed I now one Headmistress of a mixed senior school who would repeat that there were far more girls who committed petty theft than boys, but that staff were unwilling to confront girls with the safe frankness as boys- in particular male staff. One swallow doesn’t make a summer, but its an interesting starting point.