Well animated, but almost pointless.
The animation was great and very fluid, but the Flash as a whole was poorly structured.
It was only about 30 seconds long - but that's not the problem - you could have added some little sequence to it at the end to finish it off, because it's just completely unfinished it's not exactly worth uploading, even if you got tired at the end of making it.
The animation is good - keep that up - and the idea of some sort of 'Back to school' movie is a good idea, because it's something most can relate to especially at this time of year.
If you finished it and made more of a story out of it, it may have been good. Not much to say after that.