Good and Bad...
Lets start with the good. You've got some good humor. The weird teacher was great, but I wish there was a little more of him. There were a couple voices you had that were phenomenal, I believe it was the voice of the lady on the bus.
The bad... A lot of the humor just seemed to be constant insults that got old pretty quickly. Then a lot of the humor just seemed to be absolutely random like the weird guy on the bus and although random humor gets chuckles, I couldn't even cough up a pity laugh for some of it. The animation was pretty lousy, very choppy and some scenes would freeze, not to mention the constant lagging as well. Most of the voice acting was bad and barely audible so I had to boost my volume to max to hear it.
Keep working though and you'll have a good flash in the future.