Both which school you go to and your GPA try to be proxies for what you can do. They are probably even reasonably good proxies (for some jobs). But on the other

Both which school you go to and your GPA try to be proxies for what you can do. They are probably even reasonably good proxies (for some jobs). But on the other hand too many people rely on them, so as a manager you can get great hires by finding brilliant people who are undervalued on those metrics, and thus not as strongly fought over on the market. And of course at some point in your career nobody should be asking for your GPA or school anymore because by then there should be much better ways to communicate your ability.