I received a bachelors in mathematics fairly recently and I am thinking about a career in teaching. I know that you must posses a license to be a full time teacher in most schools, but what requirements are there for being a substitute teacher? I hear teaching can be too overwhelming for some people. For this reason I would like to try substituting before I try attempt a career of teaching. How much more time and education would I need to be able to obtain a license? Anyone else here from Massachusetts? They have pretty high standards in some schools.