When the child "dies" before each test, He doesn't sleep at night, complains about abdominal pain, This cannot be underestimated.
Try to find the cause: Maybe he has an arrears in science, He is afraid of the teacher or cannot cope with stress?
Talk to your child about it, Also go to school and read the teacher's problem.
♦ Zaproponuj, that he would learn a friend before the classrooms, girlfriend. Then ask them. If the child is sure, that it is well prepared, His fear will decrease.
♦ Naucz je prostych ćwiczeń relaksacyjnych, which will allow him to calm down, np. let him count on 10.