@amygarside,
Again, it will depend in which setting or milieu you choose to teach. If you are and RN, you may teach CNA classes usually at all levels and in most settings. If you are teaching classes to LPNs , you may or may not be required to have a bachelors in nursing. If you are wanting to teach classes to other RNS you will need a Bachelors or Masters in Nursing for level of entry into these positions as a rule.