I'm playing a homebrew version of "Broomstix" with my nephews and am looking for a resource that doesn't just list all the Harry Potter universe spells and their functions but also lists the approximate "level" of the spell (age at which it is learned at Hogwarts for the average student). I don't have time to read the books again, but does anyone know of a resource (website) that does this? Alternatively, can you suggest a rule of thumb for deciding how advanced a spell is?
I haven't yet found a complete list, but some fans appear to have gone to efforts to categorise some spells by grade.
I've yet to find any resource that lists when people learned what spells. I imagine that could be sorted out by going through one of the several available lists of spells which also list who used them and in which books — something I won't be doing yet, unfortunately!