I've taught every grade from 6-12th and almost every course in the History Department and I've taught Algebra I, Geometry, and English 9 a few times. I started out with a History and English certification and added Math about 10 years ago in case I ever lost my job. Within my certifications, I would teach any History or English course. However, with Math I would prefer to stay with Algebra II and below because Pre-Calculus is where my comfort starts to go down. I would also never teach Elementary School.