Man can you weave a tale to try to excuse or explain away anything, can't you?Kids are forced to take things in high school that they may have no real interest in or no aptitude for. People are tested on the ACT in areas that they may have no aptitude for and will NOT even take in college. As a result their GPA may be lower in high school because of certain courses and their ACT may be lower for the same reason.
For example, let us take a person who simply loves the Social Studies and wants to be a teacher of History. In high school they have to take several years of both Math and Science. They have no interest in either nor any particular aptitude in either so they do as little as possible and never apply themselves to those courses. They get straight A's in their Social Studies courses however.
In college they take no math or science or perhaps a single course where they must. Their transcript is loaded with social studies classes at which they excel.
Your high school GPA was not a proper measure of if they are smart or not. The ACT with sections on both Math and Science is not a proper measure on if they are smart or not because they are being tested on areas they will not study nor use in their profession.
To stress those sort of rubrics as standards of intelligence and then to conclude that their other grades ( in their actual field plus education courses) are the ones in error is simply ridiculous. It should be the other way around.
Neither you nor Turtle can cite any actual study or evidence which shows that education majors do not properly earn their grades. And for you to have a valid point, that is what you must do.