Gil,
I am not sure whether I agree with you or not, because I am not sure whether you are talking about ALL students, or specifically about students with disabilities. Are you suggesting that the only reason students with disabilities need extra time is because they lack preparation? I'd have to argue that point with you. But if the suggestion is that nondisabled student wouldn't do any better with extra time if they were not prepared, it rings true.
Dr. Jane Jarrow