Just as an aside, in my experience, the "every child can succeed" peer-tutoring crowd is, and always has been, opposed to NCLB, because they think standardized testing doesn't show the child's true abilities and it stifles creativity. In fact, they don't like accountability at all.
Some of us realize that some schools and teachers weren't doing a very good job, like the idea of being held accountable, but think it's unrealistic to think that every child will ever be able to work "on grade level", must less by 2014.
And then there are those who seem to think it's possible, and they're going to make it happen, no matter how far tests have to be dumbed down before then....
Fair enough. Maybe it's not the "NCLB proponents". All I know is that mainstream educational theory classes teach that it's a usable strategy.
No matter who it is pushing for it, it's still not the job of the kids to be teaching their peers.