You’ve got things the wrong way round. It is the quality of the teacher’s students that tell us whether we wish to study under her. The teachers own achievements are a proxy which we resort to because we need to decide now, we cannot wait to see the longer term effects on last years students.
Another proxy is the success of the teacher in getting her students through examinations. This is a proxy because we don’t really want the certificate, we what the achievement that we think it heralds. We can assess the strength of this proxy checking whether success in the examinations really does herald success in real life.
I agree with the conclusion of the original post but find the argument for it defective. The key omission is that we don’t have a tradition of rationality dojo’s, so we do not yet have access to records of whose pupils went on to greatness. Nor do we have records that would validate an examination system.
Notice that the problems of timing are inherent. The first pupils, who went on to real world success, prove their teachers skill in an obvious way, but how did they choose their teacher? Presumably they took a risk, relying on a proxy that was available in time for the forced choice they faced.
Yes, precisely. The issue isn’t how we can become a better teacher, or find one to study under. The first question, that MUST be asked before all others, is: what does it mean to be a good teacher, and how can we define the relevant differences between teachers?
Once that question has an answer, we can begin searching for ways to make ourselves better match that defined meaning, or in signal traits in others that indicate they’re likely to match that definition well.
Concepts like “has students that will accomplish great things” aren’t useful for a variety of reasons. And once someone has developed a reputation for being a great teacher, they’re likely to attract students with a lot of potential (assuming there are working metrics for potential that are actually consulted, as opposed to rich people simply buying a place for their talentless children). The reputation alone would result in the teacher’s students doing better than most.
Evaluating the teacher requires that we have some way of determining, or at least guessing, what a student’s performance would have been without the teaching.
You’ve got things the wrong way round. It is the quality of the teacher’s students that tell us whether we wish to study under her. The teachers own achievements are a proxy which we resort to because we need to decide now, we cannot wait to see the longer term effects on last years students.
Another proxy is the success of the teacher in getting her students through examinations. This is a proxy because we don’t really want the certificate, we what the achievement that we think it heralds. We can assess the strength of this proxy checking whether success in the examinations really does herald success in real life.
I agree with the conclusion of the original post but find the argument for it defective. The key omission is that we don’t have a tradition of rationality dojo’s, so we do not yet have access to records of whose pupils went on to greatness. Nor do we have records that would validate an examination system.
Notice that the problems of timing are inherent. The first pupils, who went on to real world success, prove their teachers skill in an obvious way, but how did they choose their teacher? Presumably they took a risk, relying on a proxy that was available in time for the forced choice they faced.
Yes, precisely. The issue isn’t how we can become a better teacher, or find one to study under. The first question, that MUST be asked before all others, is: what does it mean to be a good teacher, and how can we define the relevant differences between teachers?
Once that question has an answer, we can begin searching for ways to make ourselves better match that defined meaning, or in signal traits in others that indicate they’re likely to match that definition well.
Concepts like “has students that will accomplish great things” aren’t useful for a variety of reasons. And once someone has developed a reputation for being a great teacher, they’re likely to attract students with a lot of potential (assuming there are working metrics for potential that are actually consulted, as opposed to rich people simply buying a place for their talentless children). The reputation alone would result in the teacher’s students doing better than most.
Evaluating the teacher requires that we have some way of determining, or at least guessing, what a student’s performance would have been without the teaching.