This study was designed to assess the role of secondary education in the employability of operators in the South African automotive industry. Five types of secondary education are referred to, namely, a secondary education including Mathematics and Science as subjects; a matriculation with Mathematics as a subject; a secondary education inclusive of Science as a subject; a technical type Grade 12 qualification and a general form of secondary education. A two-phase aptitude testing selection process, employing three sub-tests from the Differential Aptitude Test (DAT-K) and five from the Trade Aptitude Test (TRAT) batteries, was utilised to assess whether there were significant differences in aptitude test scores of applicants with different types of secondary education. These aptitude measures were administered to 2 463 preselected respondents. Descriptive statistics such as median, mode and frequency distribution graphs were used. Statistical analysis was also carried out, using the Chi-square test of independence, to determine the differences in aptitude test results obtained by the groups in the study. The study‟s findings revealed that the type of Grade 12 qualification held by applicants is an important criterion to be considered in the selection of automotive operators. The findings specifically indicated that a secondary education that included Mathematics and/or Science as subjects resulted in notable performance in the aptitude instruments employed in this study. The findings are broadly relevant to the South African automotive industry and are of value to human resource practitioners, educators, social scientists and other researchers.