There are not specific classes you must take in college to become a real estate agent. You an become a real estate agent be passing an exam and becoming licensed. However, it might be helpful to take some business classes while you are in college Ex. marketing, finance, economics, management etc. I would also recommend communication or speech classes. As a real estate agent, you will likely be talking with many people, and you will want to be comfortable and confident in communicating.
Technically and legally, you dont' need college classes for this field. You will need to take state exams to qualify to become a licensed real estate agent.
That said, it would help to have a solid understanding of marketing, finance and sales. All those will help you be successful.
You could take these courses as a non-degree "special student" if you are not ready to commit to a degree program.
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