Question: What is the song that is playing when the students are building the ramp, skateboarding, etc. (right after the "what do you want to learn" sequence)?
Question: Since Bartleby has a talent for computer skills (creating a bogus website, fake IDs), why didn't those skills help him apply to a good college?
Answer: His friend is the one that created the website and all the necessary documents for the fake school. Even if his friend was able to create such a website, this wouldn't change his transcript from high school, which would negate any abilities used to apply to another school. No matter how creative you are in falsifying documents and websites, you can't change your school transcript unless you hack the schools records, and maybe they drew the line at that. He DID apply to many colleges and was rejected by them all, as demonstrated by the beginning of the movie.
Answer: It's Holiday, by Green Day.