The increased number of older adults attributes to a rising need for future professionals to work in geriatric and gerontological fields. Understanding the influence of students' career choices is important. A study applying mixed method including both quantitative and qualitative methods was conducted among students' taking a gerontology course to explore students' knowledge and career preference in gerontology. Facts on Aging [FAQ] was used at the beginning of the semester and after the semester to examine the different scores. The qualitative part of the study was to examine students' perceived competency level of aging knowledge and their career preference by answering open-ended questions. The results were that students reported higher competency in their knowledge of aging. Although increased knowledge through taking a gerontology class did not necessarily encourage students to choose careers in gerontology, it appears to have influenced students toward accepting working with the aging population in the future. The study offers suggestions on how to increase students' competency level in practice.