I am in the same boat with my son 9 y.o. in 3rd. He is ready for middle school if we use testing and scores to judge by. He is tall in the 90% for his age. He plays baseball, basketball and soccer each year since he was 5.
We do not know what we are going to do yet. A single grade skip is possible.
We thought we would put out all the options and ask him what he wants.
He wants to go to 4th grade and see how doing some independent stuff works out (AoPS). We are also going to try a math tutor/mentor also. We have contacted several and believe we have found a really nice match. He is the High School calc teacher and was suggested by the Middle school principal. He seems so excited to meet our son. He gave him a couple Algebra questions over the phone to try to wet his chops.
He loves school and his buddies. He has been bounding through on his NWEA scores.
the school HA coordinator sent A Nation Deceived home with him for us to look at. she also included a copy of Smart but Scattered by Peg Dawson and Richard Guare. Believe me, I know I could have worse problems