I am meeting with the a Professor from local University specialization in School Psychology and Assessment tomorrow. I am for sure going to get her take on this.
The school has been wanting to accelerate my DS in 3rd grade since starting in 1st. He is now 2+ grades up in math and reading. We have been in the camp of no acceleration as a hole but where needed. The professor lead us in this decision.

Should studies like this have weight in the balancing act.
It would be nice if the study included 3000 individuals.