Some newly minted college graduates struggle to find work. Others accept jobs for which they feel overqualified. Student debt, meanwhile, has topped $1 trillion. It’s enough to create a wave of questions about whether a college education is still worth it. A new set of income statistics answers those questions quite clearly: Yes, college is worth it, and it’s not even close. For all the struggles that many young college graduates face, a four-year degree has probably never been more valuable. The pay gap between college graduates and everyone else reached a record high last year, according to the new...