It's not that good.
The graphics were better than the first one, but I don't think the story was that good, I mean how can you do a parody of the magic school bus, and then make it completely unrelated to the magic school bus? The first one was funny because it had all characters from magic school bus in a new light, but when you introduce completely random characters and make the whole idea unrelated to the show at all, then it's just not that good.