What are the most useful classes to take in college in your opinion and why? Keep in mind this is for general education, not about pre-med specifically. I will start: Social Psychology is THE most important class i ever took. We are social creatures and there is nothing that helps you understand the implications of that as this subfield of psychology. Reasoning and Critical Thinking if you don't like philosophy, at least take this class. It will teach you the most important skill in life - how to think and analyze flaws/strengths of arguments. Social Anthropology prepare to be amazed about what is considered normal in other cultures.