Potentially unpopular opinion: This is why I’m actually very bullish on graduates from famously demanding colleges like Ivy League and other competitive universities. To graduate, you can’t just be smarter than average and coast your way through to graduation. You actually have to work hard and be able to self-motivate to do hard things even when it’s not intrinsically interesting.
That doesn’t mean that graduates from average colleges can’t work hard, of course. It’s just much harder to tell if someone has learned to work hard or if they just coasted through life up until this point if you can’t look at their resume and see any particularly difficult achievements.