Just to keep things in perspective, high-intelligence is considered a learning disability. Why? Because "normal" is the middle of what every child does or does not do. In other words, you are measuring / judging your child, based on millions of other children.

If you place an exceptionally high-IQ (mensa level) child in a classroom with average IQ children, the high IQ child has to DUMB-DOWN in order to fit-in, find acceptance and meet teacher's expectations. This will remain true throughout these children's social lives, so school is the best place to learn how to fit-in. While children are learning to fit in, they also learn numbers, alphabets, and other tools necessary identify their unique qualities and capabilities and are ready to develop their own unique aptitudes.

My point is simple. Try to remember that your child is unique. He is one-of-a-kind. There will never be another child like him. Measure him by himself and teach him to do the same.