I enjoyed this book. Admittedly, it took me a while to get into it, but in the end I'm glad I stuck with it. This book, while it does seek to offer a glimpse into the inner world (namely the faculty and politics) of an elite private school, it is best read as a satire. In fact, I think that it must be read as a satire to be appreciated.
I often judge an author on how much I love or hate his/her characters, and in this instance I have to say that I was pleased. While I remained generally neutral toward the main character, supporting characters like Marcus and Günter were fantastic additions that pushed the plot along and provided small breaks away from the building tension. The reason I refer to this book mainly as satire was that a number of characters came across as hyperboles. Trees took average characters you would find in a private school setting and enhanced them into caricatures at times (I.e., the science teacher the fixates on human evolution and behaviour, or the english teacher with a penchant for comma use). They weren't so jarring in the narrative that they pulled you out of it, but they were nonetheless there and keeps the book satirical from me. Now, as much as I liked some characters, I hated some just as thoroughly (in a good way -- meaning that this was the author's intent). You were rooting for them to fail, hated when they tried to interfere, and you gritted your teeth until the end, when the story reaches something of a satisfactory resolve for all involved. So in that respect, I must say that the author did his job well.
The one thing that drove me crazy, however, was the name he chose for the academy. Maybe it's something little, but I couldn't overlook it. The elite private high school, which he built up as a pathway to the Ivy League, is called "Academy X". This isn't a nickname. This is the Academy's NAME. I cringed every time it came up in the narrative. I would have loved to have seen a name attached to the school the reflected the prestigious nature of the school. To me, Academy X doesn't exactly elicit thoughts of ivy buildings and manicured lawns.