That's the biggest issue - he's really smart, but struggles with the process of completing things and/or nonpreferred activities. Rewards and consequences have little effect on him (I have SO many discarded token economy charts, etc. that he would just give up on rather than earn the reward), except for screens. He can absolutely do the work, his levels are only slightly below level.
His masking skills are incredible. We have always said he "polishes his halo" when anyone is around and it took until January last year for his teachers and case manager to realize that he was not completing work, not telling us about it, and creating elaborate stories about why. (Although all of that was in a parent concerns letter. They didn't believe us.) The result of that is massive meltdowns when he is at home and demand avoidance. So any time we have an observation , he is completely aware of it. I know the FBA is useless, but one hasn't been done since 4th grade (and he's been held back a year) and it claims he is attention seeking <roll eyes here>.
His diagnoses...what a mess. The Autism diagnosis only came about 6 months ago, but we've had ADHD, ODD, trauma, PDA, FASD, attachment disorder, anxiety, Proprioception Dysfunction, SPD, and so many other labels. His emotional age is between 8-10. Birth mom was bipolar and had DID. So we constantly feel like we are playing catch-up - and we really don't care what it's called as long as he gets what he needs! Bottom line, he was only just made eligible for ABA, and we hoped it would be helpful even now - and so far, it is. If nothing else, they are helping us clarify his needs.
So essentially, I am trying to get to the point where someone at school will teach him the Executive functioning skills that he needs to succeed. He has an EF class, but no one (except us at home) is making sure he is doing those things. Instead of actually assisting him with filling out a homework planner, teachers are writing it down for him. Instead of helping him with a way to remember to turn in a completed assignment (digital or paper), he is getting zeros that he doesn't care about. Honestly, he doesn't care about his grades at all. In terms of future planning, we are feeling just like the boy you mentioned above. IF he goes to college, he will most likely fail out unless he learns these skills.
I suppose I am open to the natural consequences of not doing those things, but if it hasn't worked in the past, what will be different now?