When Education Secretary Betsy DeVos proposed revoking the “gainful-employment” rule last month, critics pounced, claiming that it would “pad the pockets of for-profit colleges,” in the words of Washington’s Senator Patty Murray. In fact, throwing out the rule—penalizing schools whose graduates have lots of debt relative to their earning power—will merely level the playing field. Why should for-profit colleges, the rule’s target, be held to a higher standard than nonprofits, when plenty of for-profit schools provide students with the skills necessary for employment, and plenty of nonprofit schools don’t? DeVos is on the right track. It’s time to stop using...