Once financial concerns have been covered by their parents, children have more latitude to study less pragmatic things in school. Kim Weeden, a sociologist at Cornell, looked at National Center for Education Statistics data for me after I asked her about this phenomenon, and her analysis revealed that, yes, the amount of money a college student’s parents make does correlate with what that person studies. Kids from lower-income families tend toward “useful” majors, such as computer science, math, and physics. Those whose parents make more money flock to history, English, and performing arts.

The explanation is fairly intuitive. “It’s … consistent with the claim that kids from higher-earning families can afford to choose less vocational or instrumental majors, because they have more of a buffer against the risk of un- or under-employment,” Weeden says. With average earnings for different types of degrees as well-publicized as they are—the difference in lifetime earnings among majors can be more than $3 million, one widely covered study found—it’s not hard to imagine a student deciding his or her academic path based on its expected payout. And it’s especially not hard to imagine poorer kids making this calculation out of necessity, while richer kids forgo that means-to-an-end thinking.