We introduce a new approach to measuring the match between education and occupation by using the number of college courses related to one's occupation. Previous studies have only considered the match between college 'major' and occupation. That approach ignores the content of education and the courses taken in college. We find that taking courses in college that are relevant to one's occupation is significantly associated with higher wages, which can be taken as evidence against the notion that returns to college are principally a matter of signaling. A student's wage increases, on average, by 1.5-2.1% for each matched course.