We analyze the self-rated writing skills of graduating business majors and perceptions on how much these skills changed during college. Subjective skill measures may be good proxies of objective skills, and affect outcomes such as career goals, job applications, and graduate school enrollment. The sample includes 436,370 students from 619 different institutions. On average and all else equal, business majors are estimated to be 17.6% less likely to report high writing skills at graduation when compared with other students and 11.5% less likely to report high gains in these skills during college. Average differences across disciplines are often large.