@ucbalumnus "Since these are highly selective undergraduate schools that are presumably loaded with students who can earn high grades in school and do well on standardized tests, it is not surprising that they have many students who can get into top ranked law schools. But that does not say that a highly capable student will necessarily do better at getting into top ranked law schools at those undergraduate schools versus other ones.
In other words, like so many other lists that show better outcomes for graduates of the most selective schools, it does not necessarily show that there is a treatment effect of attending such a school (as opposed to showing a selection effect)."
For most law schools, I would agree with this, but for the top 14 law schools, I don’t think that it is true. At those few places, there is a preference for students who went to the more rigorous/prestigious undergraduate schools.
A good example is Yale, the best law school in the country. Here’s a chart from 2015, covering three graduating classes at Yale Law.
http://bulletin.printer.yale.edu/htmlfiles/law/law-school-students.html
Looking at the chart, we can see that at Yale Law, most there are 37 students who went to Princeton, and 18 who went to Amherst College. Many large and very good state flagships like UMinnesota, Utah, PennState, Missouri, have zero students at Yale. Many more have just one or maybe two.
This is true even though we all know that every single state flagship has a substantial subset of students who are excellent students, just as good as those at Princeton and Amherst.
Heck, tiny Amherst has as many of its graduates at Yale Law as the entire Southeastern Conference, twice as many as the Big East Conference, nearly three times as many as the Big 12 conference. As many as the entire ACC (if you exclude Duke).
Those large universities collectively produce thousands of graduates every year with Yale level LSATs and GPAs approaching 4.0. Amherst probably graduates only a few dozen students each year who even want to go to law school at all. Yale Law admissions can’t possibly be a “numbers game” based solely on LSATs and GPA, regardless of where you got that GPA.