Maybe a dumb question, but if a non-insignificant number of teachers are simply matching answer sheets why do you need a degree and certification to do it. Does

Maybe a dumb question, but if a non-insignificant number of teachers are simply matching answer sheets why do you need a degree and certification to do it. Doesn’t that indicate that a number are incompetent at at least one very large aspect of the job. Or perhaps, that’s as intended?