There are several 'grades' in nursing, with some taking a Master's Degree. The schooling is pricey and intensive, but the rewards are HUGE. How about volunteering at a nursing home to get a taste of it ?? As to getting a teaching certificate, that is issued by the state, and you might already have enough education and experience to get it, or my might need a month or a little more 'refresher' courses. As to which is better for you, that's completely up to you. My ex was an elementary school teacher and we have a daughter who works in a hospital with kids, so I can see both of them.