If you are going to work in a public school, you should have completed your online teaching degree, from an accredited university. May be, it is difficult for you to find your university, which has accredited status for completing your online teaching degree. If you are familiar with one particular subject, then you should concentrate on that subject and should complete your bachelor degree. If you can complete your master degree with your subject, that would be better for you. You can join your online teaching degree with the help of the website, online-degree-programs-guide.com.
This is a wonderfully designed website, which has been used for thousands of students for joining online teaching degree programs. Teaching profession is different from others and you should be able to answer all questions for your students. Some students may ask you questions from other subjects also and you should be prepared for that also. When you complete your online teaching degree course, you can find the best way of gaining knowledge with other subjects. As a teacher, it is your responsibility to make them brilliant and you should realize your responsibilities and you should deliver. You should see that all your students come out successfully with your brilliant teaching.