As an adult, I saw who became a teacher. It was not our best and brightest.
As an adult, I heard about the stereotype grading done by lazy teachers. "Oh that student is good, I'll give them an A and skim their paper... That student is a goof, they probably got a C since last time they got a C..."
As an adult, I see how terrible academic skills are, and how quickly a 12 year old could be a high school grad. College really should replace high school.
I don't trust their judgement here. I think its most likely laziness under the guise of concern.