True that he has already fought the Preps as a boss fight. I only brought up Bif because of your previous comments as to having Nick fight him. A fight with Kurt is possible, if you would rather, for later in Chapter 5.
Kurt is a character introduced in Chapter 1 by a kid named Dudeman who is no longer here. He attempted to make Kurt a badass even worse than Jake, and his writing style was real sloppy. After he was gone, we retained the Kurt character (and the Rockers) only because they were already in the story, and softened his character somewhat, also provided a mystery as to why he and the Rockers are even at Bullworth at all. That mystery will be pivotal to the final outcome.
Chapter 5 will be the last. I'll start a separate thread for Endless Summer after that, if anyone wants to carry on Tony's Story there.