Home schoolers are typically smart, but very anti-social...and they don't realize that not everyone likes them, and that most people they come into contact with hates them....however, they just can't seem to take a hint.
Of course, then you get those home schoolers who never do their work and are complete idiots....ah well.
And then there's also the home schoolers who grade their own work, and in their own opinions....they're absolute geniuses.