There is one thing that is very important but that is very difficult to correct for. Specifically, the students that graduate high school and go on to top universities are generally not average students. Do the schools make the students, or do the students make the school?
Some very strong high school graduates go on to attend Harvard, Princeton, Yale, MIT, Stanford, Caltech, Chicago, or a comparable university. Some very strong high school graduates go to top LACs such as Williams or Bowdoin. Some very strong high school graduates go to an in-state public university. Some others go to a wide range of other universities.
Average high school graduates (letās suppose students with a 3.0 GPA) might also go to an in-state public university, but are very unlikely to attend MIT or Caltech for their bachelorās degree.
Thus top students may attend any one of a very wide range of universities and the strongest students at a wide range of universities might be similarly strong. However, averaged across all students at any one particular university the top ranked schools on average tend to have stronger incoming students than lower ranked schools. Is this what makes the different in terms of long term average outcomes?
What I think at least some of us might want to know is for a student who is one of the very top students in their high school and who is capable of attending a top ranked school, will they do very well in life even if they attend an average university for their bachelorās degree?
My wife attended a ānot quite top 100ā university for her bachelorās. It was close to home (she saved money by living at home) and she got a very good merit scholarship. Then she got two masterās degrees at an Ivy League university. One daughter attended a university that also was not quite ranked in the top 100 overall in the US. She is right now studying for a doctorate (a DVM) at a university that is ranked in the top 5 in the world for her major. When I got my masterās at Stanford, with one exception it was difficult to find two other students who had gotten their bachelorās at the same university. The exception was a small group of students who had gotten their bachelorās at Rutgers and then gone to work at Bell Labs, which was then supporting them for their masterās degree.
At one point I tried to make a list of the 10 smartest people that I have ever met. I ended up with 12 people on the list and was not able to cut it to 10. I was surprised to discover that they had attended 12 different universities for their bachelorās degrees. They did have a tendency to then concentrate towards the top ranked universities for graduate degrees, if they went on to get one.
But I have not seen solid studies to back up my impressions in this area.
My general feeling is that students should strive to find a university that is a good fit for them. Some 18 year old students are ready for the rigor of a university such as MIT or Caltech. Some are not. Some are ready for this level of academic stress when they get a bit older (such as when they go for a masterās or doctorate).