They separate themselves from teachers and parents.
As friendships become more and more important to a third grader, relationships with adults become less important. Children this age might not take much interest in conversations after school or at the dinner table, feeling that they have something else they feel is more important.
What you should do: Understand that your child’s social life is extremely important to him. Give him the space and freedom he needs to fully experience this stage of his life. Try not to embarrass him around his peers.