The biggest priority is to work on understanding your sons IQ and achievement scores.

It's hard to make others understand if you don't understand yourself. Reading Ruf was helpful to place my DD's LOG and what she is capable of doing. I say capable because what they can do and are "allowed" to do, even what you might want them to do, can differ.
Get a good understanding of where he really is and what your goals are and what his goals are so you can advocate in his best interest. My DD10 has had pretty set goals for herself for the last year or so. That may or may not be the case for your son.
I have a file I keep of the most important articles to us and those that really apply to my DD that I can refer to often.
HTH