This study aimed to investigate if teachers within different disciplines hold different beliefs about implicit theories of intelligence and secondly to provide a better understanding of the scientific theories of intelligence in relation to the implicit. The authors also investigated if preferences for implicit theories of intelligence have anything to do with age or experience among teachers. The findings revealed that teachers from language, social science and practical disciplines had a significant preference for an incremental theory of intelligence compared to an entity theory of intelligence whilst the teachers in mathematics did not. The results from this study also show that (1) older and more experienced teachers and (2) younger and less experienced teachers had a stronger preference toward entity theories of intelligence.