I currently hold an M.A. in Adolescent Education but do not have NYS Certification. However, I'm realizing that maybe I would be better teaching in an elementary school. I've heard that three years teaching in a private school can qualify a beginning teacher for certification in lieu of student teaching, but can I still apply to be an elementary school teacher when my degree is for secondary education?

Also, just as a side question, I've seen ads for positions that are "3/4 time" as opposed to full or part time. What's the difference?