I just checked the job functions. It only said certified teacher. Right now, my terminal degree is educational research. Not teaching math. If a certified teacher position sponsors H1B, I will try to take math courses and get certified.
-Different states has different requirements to get the teacher certificate. If the teacher certificate requires bachelor degree or above, then the position requiring certified teacher may be qualified for the h1 position. So, you had better contact the school/employer to see whether they can sponsor the h1 (H1 sponsor needs to be approved by USCIS, so the school should know whether it can sponsor H1).