This is not a great book. It's probably not even a good book, as she allows her poetry to migrate into her prose far too frequently [and there is a reason you have not read her poetry]. But it's still an interesting book. It combines the horrors of the modern educational system, the horrors of the modern teen, and a narrator who suffers from an inability to acknowledge her own failure.
As a failure in the high school milieu myself, I can sympathize, but I like to think I was more realistic.