I'm in the middle of "Little Brother" by Cory Doctorow. It feels kind of like going back in time to my own teenagehood at a high school in San Francisco (except mine was exceptionally boring and devoid of run-ins with authority). It's always tough to write from a teenage point of view -- when you are a teenager, you often don't realize there's any other point of view out there, and once you're past it, most attempts either feel to precocious or too self-centered.
Yeah, I enjoyed it too, but I suppose if I read it critically I might see more of its flaws. I remember the ending being disappointing, too.
I think you'll like it! It really emphasized the importance of love from parents, which is both encouraging and daunting . . . hopefully not guilt-inducing.