User blog comment:Jiskran/Realistic RL vs Hogwarts 'realistic'/@comment-10525859-20140215220708

Despite the Tom Riddle example being totally legit, characters act their own way, all depending on their personality. Giving strict rules might not make them stop doing what they do. If you think of it, wizard "combats" might just be the equivalent of ordinary fights. Expulsion seems a tad harsh, since students usually only get a few detentions for fighting.