There are teachers that actually do have lists of books that students can pick from to focus on. This can be done through literature circles, where you split the students up into something like 4 groups, each with a different book. There is also the reading workshop model where students have a lot of choice over what they read. I'm still a little iffy on how the reading workshop model works, but I know several teachers who have found good success with this model. In any case, it is something I think popping up more frequently now, sharky, to some success.