How old do you have to be to get your CNA in Tennessee?

I am 16 years old now and an upcoming junior in high school. After high school I want to go to college and get my RN. I think having my CNA would be a good start. Also I know that the summer after my senior year I want to move out so I have started saving money. A job would help a lot in getting more money to save. Thank you for your time.