If tutors really do reliably produce two-sigma learning gains, then why aren't most top achievers the product of tutors? Yes, they're expensive, but perhaps "only" 2-3x private school; there are a lot of wealthy parents. Diminishing returns for high achievers?
Conversation
I am seeing more extremely wealthy people (eg billionaires) shift to tutors.
But even then you’re right, if it’s a full two sigma you would expect basically every high performer to be from a tutor.
Seems like there’s an asymptotic level of ultimate max performance?
7
2
33
Replying to
I think there must be. Otherwise mean+2s should be dominated by tutored people from the mean. And if that produces a shift to 3s, well, then it should be dominated by tutored people from mean+1s.
Replying to
Would make sense.
Can move the median performer to a top performer, but if you’re already a top performer doesn’t do too much? I could see that.
I mean the n all of this is based on is relatively small, and the experiment design could have many other variables.
1
3