What steps does a teacher take to if they suspect child abuse?

I'm going to school to be a teacher and I have to make a brochure and one of the things i have to put on there is the steps a teacher should take if they suspect child abuse. Can anyone help me out? I know a teacher has to report it, but I don't know the steps involved or who exactly the teacher reports it to. If you know personally, or if you can direct me to a website that might help me out that'd be great. Thanks in advance