The problem with this approach is that it's hard to evaluate the performance of your teacher until many years later, at a time when you only just came to realiz

The problem with this approach is that it's hard to evaluate the performance of your teacher until many years later, at a time when you only just came to realize that not only had you learned a lesson, but also the magnitude and how profound that lesson was. I didn't come to appreciate everything my grade school teachers instilled in me until many years into my professional career. If you'd asked me as I was getting ready for my exams how I'd rated them as teachers, those I liked the most would have gotten the highest grades regardless of how much I'd really learned from them. Those I liked the least would have gotten the lowest grades. It wasn't until many years later that those I liked the least during my academic career (if you can call it that) were the ones who actually taught me the most. It would have been a shame for them to be fired on something so subjective as how much I liked them or how dissatisfied I was that they'd just issued me the 4th 'D' grade in a row. It's only now that I genuinely appreciate everything they taught me that I feel honestly worthy of sitting in their classroom again to learn what is they're willing to impart. So I say thanks to those teachers that pushed me, those that held me accountable, those that I disliked during school. It was you that would likely have been fired by these performance evaluations that gave me the most. I just never would have had the foresight to give you the grade you deserved.