OP
MikeFerrara:If a student really did have trouble comprehending the simple steps involved in using a table I'd be concerned about their mental fitness for diving and would probably be inclined to suggest they get the opinion of a medical professional or at least someone who is more qualified to diagnos and assess learning disabilities than I am. As I say though, in the cases where I had students come to class not familiar with basic table procedures, it was a clear case of not having read the book. They're going to have even more trouble with their computer if they refuse to read the book.
We had a guy that worked at SC but not in the dive department who took the final 5 times before passing.