Postsecondary education is often equated with earning a bachelor's degree, but a large and growing part of postsecondary education involves earning subbaccalaureate credentials (associate's degrees and certificates). While some economists have focused on the role of bachelor's degree programs in meeting the demand for skills in the labor market, others have noted that subbaccalaureate credentials help meet the demand for middle skills--that is, for skills that require additional training beyond high school, but less than a bachelor's degree. This report focuses on the sector of the education system that trains the middle-skill workforce--that is, on subbaccalaureate occupational education. The federal government helps support these programs through the Carl D. Perkins Career and Technical Education Improvement Act of 2006 (P.L. 109-270), and therefore it has an interest in monitoring the size and nature of this educational enterprise. This report describes the output of subbaccalaureate occupational education as of 2015, based on the number and type of credentials (associate's degrees and certificates) awarded by this educational sector, and describes trends in output in the 12 years from 2003 to 2015, often comparing this subbaccalaureate sector to the baccalaureate sector. The report also divides the postsecondary institutions that provide occupational education into three groups: public institutions, private nonprofit institutions, and private for-profit institutions. Trends in the credentials awarded by for-profit institutions are of particular interest, given the relatively rapid growth of the for-profit sector in recent years and continuing concerns about the debt that students at these institutions incur and their labor market outcomes.