I have a strong suspicion that there are so many exceptions to your assumptions here that your model is wrong. My finest computer science teachers never did an

I have a strong suspicion that there are so many exceptions to your assumptions here that your model is wrong. My finest computer science teachers never did anything but teach, either. At the high school and collegiate levels. Same with my favorite college English teacher. I think a more effective route is to regularly fire the bad teachers, so they can’t harm students with their poor guidance.