A little light anecdote…
About 25 years ago, back in the UK, I attended a fairly high level training course on embryonic ideas of value-added, measuring performance of students and schools.
The keynote speaker was from National Foundation for Educational Research and was the guru at the time.
In the Q+A session afterwards he was asked a simple question:
“What do you think is the single most reliable measure of a student’s or schools’ performance?”
To which he replied “Postcode”.
Has anything changed in 25 years?
~ Roy Barton