To offer a different persective, we are two weeks in and my kindergarten child has been placed in reading and math groups by ability and his teacher is trying to give him some differentiated work. He has been assessed, albeit not in a really in-depth way.
Don't wait too long. Things get entrenched. I would say, another week or two. Six weeks is too much, IMO.
I remind my child that if he does his best work and shows what he knows then it lets the teacher see that he can already do the "too easy" work. He has to prove what he knows first... every year.
This is also good advice, but a lot for a K kid to remember and follow. Is your child obvious with his abilities? Does he talk a lot? Does he read? It is definitely not impossible for a good K teacher to notice a gifted kid by a week or so in.
