It's like, you've got no time to just plain enjoy it for what it is, you've got to get on and 'dissect the vision of the author with inexpert tools'...
For me, Robert Frost's "The Road Not Taken" was wrecked by studying it, no less than 3 times in different years and coming to the same conclusions/visions.
Also, My Place was wrecked for me, not by having to study it as a journey as much as the attitude of the teacher and everyone else towards it - that it was 'no good' and that we were only studying it to be 'PC'...
Couldn't enjoy it for what it was, again, we had to load on another slather of politics onto it. I actually really enjoyed it, I felt like it had something of value to me, although I'm not sure I'll read it again... So, wrecked.
Most of the actual books I've read in high school I wouldn't have read otherwise, just because I have gained a healthy suspicion of 'literature' from school - Robert Cormier's works, for instance, and something called "Wrack" by James Bradley... very postmodern and depressing.