Law it's really top-14, and it matters a lot. BigLaw recruits almost exclusively out of those schools, and law has a bimodal salary distribution where BigLaw pays $180K out of school while smaller law firms and small-town law practices typically pay just $45-65K.

Many other industries tend to recruit only out of top universities, and getting into them if you didn't go to one is basically impossible. Management consulting, investment banking, hedge funds, philanthropy, many managerial government positions. The way you get into these is through going to a school that places lots of people into those industries, and then work the network.