Harry Is A Dragon, And That's Okay
Harry Potter is a dragon. He's been a dragon for several years, and frankly he's quite used to the idea - after all, in his experience nobody ever comments about it, so presumably it's just what happens sometimes.Magic, though, THAT is something entirely new.
Comedy fic, leading on from the consequences of one... admittedly quite large... change.
This largely follows canon in many respects, but a lot of the more dangerous events aren't as dangerous as they are in canon. Instead Harry has a comparatively normal seven years at Hogwarts, getting a mostly-uninterrupted magical education, which if you think about it is quite an impressive feat for an intelligent dragon.
This fic features a broadly dotty but pleasant Dumbledore, Dean Thomas elevated to a coequal status of main character with Ron, Hermione and Neville, House Rivalries treated as a school in-joke, and a cast of many people who are not human.
It also features Dumbledore teaching classes, though only once he remembers to tell people about the class.