It was good, but there's a lot to improve, imho.
Well, I like the story, even though some people complain that it's predictable. But still... Amy was more like an angel, because really, he would be SO lucky to meet such a kind, helpful girl in his class... and she talked to him like she knew him before. Yeah, and why did she want friendship ? I would accept better if she would fall in love with him. The ending was kinda good, but it was rushed a lot, I think you could do that a lot better. It has got great potential, though.
About the graphics... I like how Amy looks, she's cute. But overall the graphics are not the best I've seen here on Newgrounds, sorry.
Keep up the good work, if you're planning on doing something similar, good luck to you ! :)
Btw, if you made it longer, I would probably cry, but as I already said - it was too rushed.