"Let's set 'Emma' in a modern high school!" Does this sound the obvious kind of movie gimmick that everyone uses nowadays? Perhaps, but it's an inspired idea all the same. Jane Austen's characters, and her readers, and the society in which her novels are set, like Jane Austen herself, are HEAVILY conscious of class and social standing. No atmosphere quite so snobbish exists in the modern world. EXCEPT, that is, in the corridors and courtyards of the right kind of high school. And where else in the modern world would you find so many people who seem to spend all their time calling on one another?
I was reminded of how well Heckerling moulded "Emma" to fit a modern setting when I saw the idiotic 1998 version of "Great Expectations", adapted by someone who somehow failed to notice how important all the stuff about class and snobbishness was. It's clear that Heckerling understood her source. She isn't afraid to make changes - even radical changes, if the modern setting requires as much - and no character exists MERELY because they have an analogue in Austen's novel. (The most crucial thing is that the Emma-equivalent be sufficiently charming; and so she is.) The result is a film which is winning and satisfying, whether or not you know anything about the source material.