You can get what is called an alternative certification. Depending on where you live they may let you get it while teaching and pay for it for you, since you already have a degree. Again, it depends on the school, but for a few it seems like it may take a year, but it depends on you, how many hours you take, the school requirements, etc. No you do not have to start over and obtain a bachelors degree in education, you can get your certification then take the teaching test, called the PRAXIS and one other good thing is that you will get paid the same or more as a beginning teacher with a bachelors in education. Check with your local colleges and universities, the one you would like to attend and talk to someone in the school of education, maybe set up a meeting with a counselor or an advisor, hope i helped and good luck.
