I completely agree. There are WAAAAAY too many factors to break it down to "Kids with this IQ need this adaptation."

I think IQ is one factor, and it can be very important. But it is only one factor among many, and just how important a factor it is varies from child to child.

And to add to the complication, no classroom or teacher is the same as any other. What would be standard practice in one place is high-level differentiation in another. Too much variation to generalize!

No answers here either, I'm afraid.

Kriston