Set theory has no strict prerequisites, but a level of "mathematical maturity" is essential to grasp its concepts effectively. A foundational understanding of proof writing is beneficial, as many set theory courses emphasize this skill. While elementary set theory can be accessible to younger students, a more formal approach requires familiarity with logic and proof theory. Courses in linear algebra or multivariable calculus may enhance understanding but are not mandatory. Overall, developing proof-writing skills and logical reasoning is crucial for studying set theory and advancing to topics like general topology.