J.D.
http://www.texasteachingfellows.org/index.shtml
You do have to have specialization to teach in elementary, kindergarden, and pre-K. I don't teach, but am the child of educators. My mother has both her kindergarden/pre-K and elementary education certs.
Since you have a masters, you may be able to teach online education courses for college students also. So check with University of Phoenix to determine if you have the credentials.
http://www.phoenix.edu/faculty/become_a_faculty_member/be...
Good luck!
Jodi