This has been debated Ad Hominen, and among some people “Elite College”=$$$$ is the assumption they make, and they frame their whole kid’s college experience on that basis it seems. Elite colleges are considered elite because they are extremely competitive, they are admitting kids who come in with high academic achievement, with big test scores, EC’s, and so forth (and also, a lot of them tend to come from well off backgrounds that enhances their ability to play the admissions game). So right then and there you have a self selected group, who are already achievers, who come from backgrounds where the family likely is achievers, and so forth…
Then, too, going to an elite school has a little thing called networking, and it is huge. Because they are elite schools, a lot of companies assume the kids are better and brigher, so they for example look there for interns, which is a path to a good career track. More importantly, elite school graduates tend to look at kids from their own school more favorably (which is human nature, people tend to look more favorably on things they know), and that leads to jobs and internships.
When you get to the next levels down on competitive admissions (ie from crazy, down to merely highly competitive), you have a wider range of students, in terms of background and ability, and if you compare graduates of “anywhere U” to an elite school (let’s say Rice, not to use the well beaten Ivy league), it is going to look better as a whole at Rice when it comes to jobs and salaries because the typical student at Rice is going to be better prepared to get a high level job for the reasons above, some of which have to do with the school, others with who the kid is.
The other thing is sheer numbers, the elite colleges (let’s take the top 100 schools as a hypothetical) are a small proportion of the total college population. Let’s say those 100 schools admit 2000 students a year, so they graduate 200k kids a year, whereas hypothetically let’s say the rest of the college graduate population of the next tier down (I am leaving out a lot of schools with this, the online schools, the community colleges, etc), and let’s say there are 500 schools in the next tier graduating 1m kids, the wage dilation factor is going to be a lot greater for the second tier schools, sheer numbers guarantee a wider distribution of incomes, and the range of students in the second tier being greater means outcomes are going to vary more.
The real test? Compare the top students at elite colleges with kids with similar stats who went ‘downstream’, maybe because they got a full scholarship, and then come back and chart salaries over a career, and see what happens, rather than initial salaries. For one thing, the ‘elite school effect’ (also called the “ivy effect”) diminishes past the first job, in most professions outside some investment banking firms and the like, going to an elite school diminishes over time, because the ability on the job becomes more and more important, and top performers are top performers, pure and simple. I would expect any perceived wage gap to diminish over time, some elite college graduates will become ordinary workers, more than a few of those from the ‘other’ schools will blossom and become major league players, and it is only over a spread of time that this can be shown. Even if with the ‘lesser’ schools you take the kids who weren’t good enough to get into an elite program, over time you will find many of them blossom.
Getting into an elite school gains you advantages, there is no doubt, but as a mystical source of a moola-laden future that only goes so far. I would argue the advantage comes much earlier in life, that a kid who gets to understand life early, who developes the kind of things that lead to success (willingness to take risks, which might hurt elite college graduates since many of them spent their lives growing up avoiding risk), work ethic, curiousity, the willingness to experiment and think about things differently, the ability to get along with others, and also having an idea of what they are passionate about. Take a look at the swath of successful people in this country, those who have founded new companies, those who have achieved levels in other areas, and while you will find a lot of graduates of elite schools, you also will find those whose college careers you might consider “mundane” and the like. There is an old joke that the elite college grad often reports to the guy who went to state U and majored in partying at his frat, and while that can be debated as a rule of thumb (it isn’t), it has truth in it that success is a lot of things, and the guy who went to state U and partied might well be a genius who creates something new, and his genius might be outside the classroom, in leadership, networking, and with a passion for example.