The Programme for the International Assessment of Adult Competencies (PIAAC) assessed literacy, numeracy, and technology-related skills of adults and found skill levels of US adults are well below the international average. In a world where advanced skills are requisite to workplace competitiveness, low skills are a danger sign. An initial PIAAC finding was that half of US adults do not complete a postsecondary degree. A question remains: do adults continue to learn purposefully--that is, either formally or non-formally--after leaving secondary settings, and how does learning relate to their education levels? A related purpose of the paper is to describe learning types that adults pursue. The paper also investigates barriers to and motivators for learning. Implications for adult educators are discussed.