How much does it matter if I go to a well-known school (Ivy League) vs. a less well known – but academically well known school?
Both types of schools will serve you well. Ivy Leagues have worldwide recognition. Less well-known schools would have national/area recognition which would help you if you stay in that area. The key is how you fit on the different campuses because ultimately, your success after graduation depends on your grades, leadership, research opportunities, internships, network, and faculty letters of recommendation. You have to back up the school’s reputation with your own personal accomplishments.