<p>I would beware state “reciprocity” – it is only after 3 years of full time teaching that states have reciprocity. Otherwise you need to spend hundreds of dollars on additional tests. For example, in PA they are changing all of their elementary certifications so that there will be issues with reciprocity going forwards (they are doing the same as texas, prek-4 and 4-8 while all surrounding states do something more like k-6). With math it is less of an issue, but the teacher market is completely saturated. I also worry that you say he is very shy, teaching is an arduous career these days with standardized tests. I know many students who thought they wanted to teach math, did student teaching, realized the behavior management and so on was not for them, and were left with little to fall back on - at least their degree was in math so that helped. Please feel free to private message me, I am a certified math teacher in VA and would be glad to talk to you about the profession.</p>