Thanks, everyone. I know my boy has empathy, at least since he was four he could empathise with cartoon characters just by their sad facial expressions. He also likes to make donations to charity, etc. I think he is just a little self-absorbed. He usually has great patience, especially with having a baby brother, but at school he has more important things to do. He is aware that school is his time to learn, so he probably doesn't want to have to teach. I understand that it can be a good learning tool, but it shouldn't be a deciding factor in his acceleration.