They have physical reactions to stress.
Although second graders are experiencing amazing growth in body and mind, they are still prone to nausea, thumb-sucking and pants-wetting when they are stressed out. Because of their growth, they put pressure on themselves to act more mature and do better in school.
What you should do: Find out what your child is stressed out about, and help him through it. If he has an embarrassing episode, don’t make a big deal about it, and help him move on.