If your child is younger than 7 years of age you can tell him/her:
“You are going to meet a special teacher who wants to know what you are good at and what you want to learn to do that you can not do now.”

If your child is older than 7 years of age you can tell him/ her:
“You are going to meet a teacher who wants to know all the things that you are good at and all the things you want to improve.”

To prepare the child, they must wear comfortable clothing and sneakers.