What can yoga instructors do? Get certified, get covered by a liability insurance company, and establish a track record of safe procedures in your classes. Registration is an option, but it's not often required for liability insurance. To be honest, some teachers (who are not certified or registered) have sports liability insurance coverage. However, certification does show that you are formally educated in safely teaching yoga classes. So, that does build your credibility as a teacher who cares about student safety.