What degree or experience do you need to teach STEM classes at the university level?

To teach any higher education classes you must hold at least a Masters degree in the field you will be teaching. However, in most cases a Doctorate is preferred when teaching at a university. Although STEM is an interdisciplinary field, each individual class should be taught by someone holding a degree relating to that specific subject. For example, if you hold a PhD in a mathematics discipline, you would be teaching math classes at the university level.