This study examined the associations between teacher preparation components and the knowledge of teaching candidates based on data from the TEDS-M study. The findings reveal that the number of mathematics content courses taken has an effect on teaching candidates’ level of MCK in three countries. Specifically, the authors found that taking courses in discrete structure and logic had an effect on MCK in Chinese Taipei, Spain, and Switzerland. Furthermore, they found that taking courses in continuity and functions had an effect on MCK in Chinese Taipei, Switzerland, and the USA.