How to handle my child?

My child is 2nd grade and reading at 4th grade level. He has A+ in every subject. He often asks his teacher for more homework just to keep him challenged i guess? His normal homework he does it on the bus on the way home. Other parents in his class complain that they’re given too much homework. They have to pry their kids to do it and sometimes it takes 1-2 hours of working with their kids to get it done. My child does it with no help in a much shorter time period without being told by an adult. I have other children and they aren’t like him. He’s different in this way and just seems gifted or something. Is there any good way to proceed or get him tested on his actual gifted level? Should I consider seeing if he can test out of 3rd grade and go straight into 4th grade next year?