Re: point #4

"can your son tell the difference other than with grades? is the math process actually harder for him or is he just not as quick with it?"

I only know that when I have been away, no one give them iodine, and they are teenagers... not the first thing on their mind.
- grades goes down, he says he know the subject, but make mistakes. One week off is no problem, 3-4 is when I see it.
More conflicts, too.