I have a broken hand and a plaster cast, for fear of being laughed at at at school.

This is an unexpected thing. No one wants to have a broken bone, and others won't laugh at you at school. The main reason is that it is inconvenient for you to go to school. You can only listen in class, not write. It is inconvenient to go to the toilet after class. Many people will hurt themselves, and fewer people may be late. Also, students will play during recess. If you are not careful, you will be knocked down. Then take a few days off and let Bones go to school again. Students will also care about you.