Many so-called brain-based educational approaches have been strongly criticized for their lack of empirical support and occasionally for their use of pseudoscientific concepts. As a result, several use the term neuromyths to refer to false beliefs or misinterpretations regarding neuroscientific facts. We surveyed both teachers and student teachers concerning their agreement toward hemispheric dominance, modality dominance, and the Brain Gym© method. Results suggest that teachers as well as student teachers believe in the reality of hemispheric and modality dominance but only a few were aware of the Brain Gym© method. Correlation analyses show moderate relationships across different beliefs and/or their perceived benefits in education. Teachers believed more than student teachers in hemispheric dominance and its pedagogical relevance. Together with other studies, the results suggest that teachers and student teachers could benefit from appropriate training in this new field of research.