This year he explained he won't do that anymore so instead he is pretending to be stupid. He says, "Dumb people have more fun." Now he actually can't add or subtract and has lost his whole ability to develop. I cannot watch my child do this to himself. He has convinced himself to be dumb! Please help me get my son back!
Assure your son that under no circumstances are you going to let him be made class "tutor" again. Try to get him to do fun math and reading games with you at home, perhaps with a small reward if he participates fully. When he shows you (and himself) his true abilities, he may be up for some individual educational testing. You may need to obtain this outside of school in the private market. Again, offer a small incentive if he tries to do his best during the testing. You should also clue-in the examiner that your son may try to hide his true self.
With proof of his true potential, the school may be willing to offer him some acceleration such as a reading class with the next grade up. It's worth a try. Remember that gifted kids are often gifted debaters! Counter his "dumb people have more fun" comments with your own comments about what kids who try their best in school get to do. Keep it on his level, because even though he is obviously quite bright, he only has the experience level of a six-year-old. I hope you find this information to be helpful. Good Luck!