I am currently a graduate student very interested in teaching. I grew up in Louisiana and in many instances I had teachers that knew nothing of the topic they were trying to teach. Shortly after I graduated high school they had a gym teacher who never took a single physics class teaching the AP physics program. I find this disturbing. Surely things are different in Texas and the present. I guess my question is what are the requirements to become certified to teach a particular subject. For instance, what level of education must that person have in the particular subject they want to teach. Also, what are the post certification duties. Is a certified teacher required to take so many hours of workshops or classes in order to reaquaint themselves with the new findings in the field of their subject?