Thanks for your query.
I appreciate your observations giving the details of your son. The problems enumerated by you do not have a relationship with Klippel Feil Syndrome
. I suggest you consult a child psychologist
who will be in a better position to assess the child and guide you. I see no reason why the child cannot do well in his class by a little guidance and right professional help.
I hope I have responded to your query to your satisfaction. Please feel free to revert back with any clarifications that you may have.
Wishing your son all the best.