Answer
At the very least you’ll need to become a licensed registered nurse (RN) with several years of work experience and a Bachelor of Science in Nursing (BSN). Most of the time you’ll need a MSN in nursing education, especially for teaching at a university or college in an academic environment.
What degree you need depends on what you want to teach and where you teach it. Generally if you earn your master’s degree and earn your certificate as a Certified Nurse Educator, you’ll be qualified for a position as a clinical nurse educator.