It's not bad
As others have mentioned, it's pretty lengthy. Attention spans are so very short these days. Still, the assets are well drawn, and animated well enough to make a fun engaging intro. My advice...double the frame rate and add some sound. You did a good job. :)
It looks good but you schould know that on Newgrounds the people want to see completed works and not just an intro, it isn't the quality of the movie that is the reason for the low score but it is the fact that it is just an intro.
good intro too long
make it shorter or faster its too long
Looks like a really nice intro, but I think that you made the V and the C a bit... yeah, sloppy-ish.
Anyways, did you get a good grade for school? :)