Yes. You can get 100% additional time. For SATs, that will matter. (Though you should know it will have to be administered individually, by his school, and not at a testing center.) For right now, I would suggest a combination of extended time and 'key items only'. This means the teacher stars the items that will allow her to adequately assess mastery of the standards, and then leaves the others as optional. You'll want to target cutting assignments in about half. Between halving the items and 50% extended time, that usually puts the volume of work into a manageable range.
