If your go-to image of a student is someone who’s free-spirited and open-minded, who loves having a pop at orthodoxies, then you urgently need to update your mind’s picture bank. Students are now pretty much the opposite of that. It’s hard to think of any other section of society that has undergone as epic a transformation as students have. From freewheelin’ to ban-happy, from askers of awkward questions to suppressors of offensive speech, in the space of a generation.