Good fun, some issues
Good fun, first of all. The first issue I would have is that the skills are uneven, pyroblast and feedback are much more expensive than their effects warrant. The summons typically are also not worth it. It's just nice to have multiple viable combat styles. As has been said, more variety in the sprites would be nice, and it does look a bit strange when you run.
Also, while it was okay here, I can see having to always go back somewhere to raise your stats getting old really quickly. I don't know how you could fit that storywise, maybe a psychic link to your tutors that you can open up anywhere you can save? That does make paying for it with gold seem a bit odd though. Well, I'm sure you'll figure out something.
It is kind of amusing that you can improve your battle skills but never get any better at learning or making friends. It at least makes it clear which stats to focus on in creation.
I am disappointed that you would criticize Harry Potter without ever having read them or seen the movies, since that's exactly what you seem so upset at people doing to your game. A bit hypocritical. Also seems a shame to let something as silly as elitism keep you away from something so enjoyable.
Arguing with every rude person on the internet is... well let's count them... yeah, there's a lot of them, you're never going to have to time to program like that, which would be a shame. Or maybe you can multitask better than I can. In any case, pity to become rude yourself when dealing with them.
Thanks for the game.