For-profit higher education institutions have grown by leaps and bounds in recent years, largely free of federal regulation. That freedom would be significantly curtailed if the gainful employment standard takes effect. Vocational training programs would be judged by the ratio of the debt that graduates assume relative to their current earnings and the rate at which they are able to repay it. If programs offered by for-profit colleges exceed certain thresholds on those measures, they risk losing eligibility for federal student aid. Given that many for-profit colleges receive close to 90 percent of their revenue from federal grants and loans, losing access to these dollars would be a death sentence. With such high stakes, the proposed gainful employment standard has generated intense debate. Yet despite all the noise and controversy, important questions have been left unanswered: Which institutions are most vulnerable to the proposed rules? What types of programs are most likely to be affected? This report tries to answer these questions, using publicly available data to present, for the first time, a picture of what effect the gainful employment proposal could have at more than 12,600 vocational programs at colleges and universities across the country. This includes more than 2,350 bachelor's degree programs. (Contains 8 tables, 1 figure, and 29 notes.)