Nicholas Tucker described the early Harry Potter books as looking back to Victorian and Edwardian children's stories: Hogwarts was an old-style boarding school in which the teachers addressed pupils formally by their surnames and were most concerned with the reputations of the houses with which they were associated; characters' personalities were plainly shown by their appearances, starting with the Dursleys; evil or malicious characters were to be crushed rather than reformed, including Filch's cat Mrs Norris; and the hero, a mistreated orphan who found his true place in life, was charismatic and good at sports, but considerate and protective towards the weak.[53] Several other commentators have stated that the books present a highly stratified society including many social stereotypes.[54] However Karin Westerman drew parallels with 1990s Britain: a class system that was breaking down but defended by those whose power and status it upheld; the multi-ethnic composition of Hogwarts' students; the racial tensions between the various intelligent species; and school bullying.[55]