I'm grappling (obsessing) w this issue right now. For my DS, the biggest hurdle isn't the organizational system per se, but how to teach him to remove assignments from the binder and place them wherever they go to be graded.

I know others have had the "completes but doesn't turn in" problem. Any advice? Because I'm not there to help in that (maddening) instance.

As for EF in general--I agree it's really important for any person to develop these skills to be functional. A psych I spoke with said that anxiety can elevate neurotransmitters (think: procrastination, working under deadline pressure), in effect the brain creates its own stimulant. But it comes at a great emotional cost and the product suffers. I see this in my own life--but with my son, anxiety tends to shut him down completely.