A good friend of mine did that when he was about 5, I think. He could write his name, and he could write the mirror image of his name, and he couldn't not tell which one was supposed to be right.

I asked him if he ever received any special services for that. He said, "We didn't have any of this identifying people nonsense in my day. The teacher just yelled at you, and eventually, you got it right."

He grew up to be a fairly successful director of video and film in Asia.