Yes, you can. Some children become extremely anxious at the time of examinations. They may develop twitches, become very pale and thin, look confused or talk in a babyish voice. You don't need to panic if your children are like this. Children can learn how to avoid anxiety. Encourage them to:
Be still
Leave time to get work done
Have some fun
Do some revisions
Permanence, perseverance and persistence in spite of all obstacles, discouragements, and impossibilities: It is this, that in all things distinguishes the strong soul from the weak. - Thomas Carlyle