Mathematicians, scientists, and doctors absolutely! Catching and dissecting frogs, joining math clubs, debate teams, etc. It's not a requirement but when I think of the best folks in their respective fields they did not start in college. It's not that they've specialized from a young age, but they had long term passions for the tools useful for their field.

What early education provides is a safety net when things become tough. My classmates without this preparation had a much more difficult path and many eventually dropped out. The psychological effect of impostor syndrome is a component to picking field to study in college; those who feel they have a harder time than their peers are less likely to continue in the field long term.