Formal education seldom makes anyone an expert. Formal education, at best, forms a foundation on which people build. And, often, not even that.
There are some excellent real estate agents who started off as accountants, writers, housewives, or in the military. Some excellent agents only have a high school diploma. Others have associates degrees, bachelors, masters, or in some cases PhDs. But virtually no one who just gets out of high school or college (the "formal education" part) is an expert at anything. Except, maybe, how to be a student. And that comes from experience.
I do know agents who've built on their accounting backgrounds. I know others who have built on the marketing backgrounds. And so on. But it also requires a lot of continuing education and experience. Real-world experience. Not formal education.