I agree w/ acitez to an extent. It is common for kids to write letters backwards when they are first learning to write. It's also common for some kids to have trouble staying focused or following directions at such a young age. However, stay on top of your child. If you see that he continues to have difficulty in class, or you find he has trouble at home, talk to his dr. Also, stay in close contact w/ your son's teacher. Work w/ your son at home. Practice, practice, practice. Many times repetition is the key. If, though, you don't see any improvements, or you find after some time that your son is forgeting a lot of what he has learned, consider having him tested. Early intervention is very important in nipping a problem in the bud. W/ the right instruction, your son can be successful. Just don't brush this off if you feel in your gut something is wrong. Good luck!