I’m coming at this from the high school side: I teach at a small, very good pubic magnet, where placing kids at selective and highly selective colleges is basically our purpose in life. I teach all the junior English, so I’ve sort of drifted into being a default college app supervisor (there are are bunch of us. This takes So Much Work). So I don’t have the experience of being “in the room”, but I’ve seen what works and what doesn’t across a wide variety of colleges over many years. I’ve also talked to a lot of admissions officers and gone to/presented at all the important conferences.
Anyway, the first mistake people make is thinking that this process is about “deserving” students. It’s not; it’s a job interview. Job seekers also think in terms of “deserving” the job, but anyone who has ever hired people knows, you don’t consider who deserves it–you consider who will add value.
So what value to Admissions officers look for? The first is the ability to participate in the academic life of the university–this is what they look to grades and test scores to confirm. If either of those are too low, it raises the significant red flag that you lack the intellectual skills or life/time-management skills to be successful. Low grades and test scores means you never even get seriously considered. However, in the vast majority of cases, as long as your grades and test scores are above the threshold the college is looking for, they don’t more value by being even higher.
Once you have all the kids with the base academic skills to succeed, what do schools want? What adds value? Generally speaking, they want to recruit students who 1) will go on to be successful, as a credit (and “development opportunity”–i.e., donor) to the university 2) make the college student experience better for all students and 3) attract future applicants.
The simplest way to see this is gender balancing. Some schools get a lot more boy applicants; some schools get a lot more girls. Virtually all schools try very hard to accept 50/50 boy/girl applicants. The reason is simple: get too unbalanced, and your apps drop, because most kids want to go to a school with a 50/50 split. So when MIT accepts a higher % of female applicants, it’s not about pandering to girls, it’s a cold-blooded attempt to make sure everyone thinks they have a good chance of getting laid.
What else adds value to schools? There’s no magic formula: it’s like casting a reality TV show, where you want a some of everything. You want some super-smart, dizzying intellects. You want some future entrepreneurs, some organizers, some idealistic, save-the-world types. You want Olympic athletes and international students. You want class discussions ( and study groups, and cafeteria conversations, etc) to sing, to be a melange of experiences and perspectives–so you want poor kids and rich kids and kids of all sorts of background. You don’t want this because it is objectively “good”–you want this because the rich, private school, full-pay kids want this. They don’t want to go to a college full of the exact same kids they went to private school with. They actively seek out schools that have more diversity, on every axis. Schools provide that diversity literally as a service.
You know what doesn’t add value? Going to class, making very good grades, and spending the rest of your time in your room playing Fortnite, smoking pot, and masturbating. That’s the kid with perfect test scores and grades and nothing else, who gets shut out and is mad because they think they “deserved” to go. But they didn’t have anything to offer. Their intelligence and work ethic wasn’t going to make anyone else’s experience better, it is unlikely to translate into dramatic post-college success, and it sure as hell won’t attract applicants in the future. The absolute death knell in an application is a kid who just isn’t busy, who doesn’t have much going on. Highly selective schools want kids who see around them endless things that need to be done, and who don’t have hours in the day to get them all done. Those are kids who add value.
So, how do you show you will add value? That’s where the essays (and supplemental essays, which are growing yearly) and interview and rec letters and extracurricular accomplishments come in. Ideally, they are congruent; they all work together to describe the same essential person, so you get a real sense of who they are. So there’s no magic activity or anything: it’s about that whole picture. If you’re looking for one of those super-intellectual kids, having super-high grades and test scores is suddenly a huge asset, but it’s better if it’s backed up with successful research or academic competitions, and teacher recs that say this is the smartest kid they’ve seen in years. If you are a save-the-world kinda kid, those test scores and grades just need to be over the threshold, but your essays and extracurriculars need to be focused on making real, positive change in the world, not just showing up to pick up trash on Saturdays–and your passion for changing things needs to be clear enough that your teachers could see it, and talk about it.
It’s easy to think that the kid with a compelling story “has an advantage”, but that’s bullshit. Generally speaking, the “compelling stories” kids never apply at all, because the weight of that story means they never got that far. The kids who get accepted because they have a compelling story get accepted because they face a challenge and they don’t just endure–they thrive. They keep their ambitions and keep pushing forward even when they have some shitty circumstances. That’s an interesting person, a person who adds value to a campus. Fortunate, affluent kids also can do remarkable things–if anything, they have a huge advantage, because they can find their own problem, devise their own solution. “Compelling stories” kids don’t get to pick.
Anyway, all this is for the highly highly selective schools, though it’s also a pretty good guide to how to get money out of moderately selective schools.