Not very good
I really hope that the finished version will be much better than this, because this wasn't enjoyable in the least. My first problem is that it's very easy to get lost because there are no discernible landmarks or a map to help you figure out where you're going. And maybe some kind of story would help to understand the point of this. I realize that this is a game about collecting homework, but maybe you could explain just why there's a guy with rocket-boots flying through the clouds collecting homework instead of just going inside of a school.
And obstacles of some kind would help make this a bit more challenging instead of just flying up and collecting homework.