Interesting article in The Argument. When I lived in Japan there were two American English teachers that would show up outside of the Japanese style 7-11 one story below and we'd chat. They were both teaching English to Japanese and the class was 100% in English. They received extensive training on how to teach English to Japanese, there were a lot of drills, sheer memorization, etc., and they were valued because they were credentialed native speakers with good accents. Because they were Americans they received training on how to treat the students because normal American discipline would likely traumatize the student. In their culture everyone in the class moves forward together regardless of performance unless there's been a prolonged illness.