gullibell wrote:Take for example teaching physics (or almost any other subject) at high school level. Virtually all those teachers have College physics degrees and a teaching qualification as well before even getting back to the high school class room i.e. about 4 or 5 years experience at an advanced level before being able to teach the subject at a basic level. Because that's what it takes to become a high school teacher.
You obviously have not been to school in the U.S.A. lately.