My suggestion is to contact the school in writing ahead of time so you can see the specific results. You do want to know the IQ and which test they used. You want to know what test they used for the reading level. You want to know if that means he can read at that level, or if that is the level of his reading comprehension. It does make a difference. (Just as an aside, on one specific test my child scored 12th grade equivalent in reading during Kindergarten. In reality, the reading comprehension was probably only 3-4 grades ahead. Big difference.)
If they refuse to give these ahead of time, you will have no choice but to use up the meeting time asking the questions. I agree that you should consider their plan and if you are unsure, ask them if you can think about it for a few days and then meet again to iron out the details, or something like that.
Good luck!
