Mary, teaching qualifications can be riduculous at any level. In junior college I had a fabulous math teacher. He was a German Jew with a math Ph. D. under the famous Felix Klein at Goettigen. He was working in Berlin when the Gestapo told him to come to their office the next morning. He went over the border that night, but couldn't get his credentials together. He got to the USA, but without his credentials couldn't get a good job. He first got a job in a private school naval academy (Farragut) in Idaho, then went to my junior college in Bremerton, Wash.

All sorts of good teachers went to Washigton state to get jobs, then found they had to go to college there to get a required course in Washington State History (no exceptions, no matter what other qualifications or their teaching specialty).