I'd like to lock a 2nd grade student in the school laboratory with the skeleton prop. Wouldn't that be funny?
Why would you want to scare a child with a skeleton prop?
I want to give the challenging experience to the student.
You should not do cruel things to a child. If you do this, you will have consequences from the school board and the child's parents.
You don't understand the meaning of challenging experience. This is for their own good.
Locking a kid in a room is not some kind of teaching experience. It is a frightful and cruel experience for the child. Figure out a better way to teach children rather than traumatizing them.