Columbia University has the highest-earning graduates in New York. Jeenah Moon / POOL / AFP The college you attend can affect how much you earn after graduation. The Department of Education's College Scorecard tracks former students' earnings by school. Business Insider listed the US colleges with the highest-earning graduates in every state. At some schools, investing in higher education pays off more than in others. Business Insider recently identified the 34 US colleges with the highest-...