To thrive as an International Substitute Teacher, you need a teaching credential or certification, experience with curriculum delivery, and fluency in English or other relevant languages. Familiarity with digital classroom platforms, international curricula (such as IB or Cambridge), and school information systems is often required. Cultural sensitivity, adaptability, and strong communication skills help a substitute teacher succeed in diverse classroom environments. These skills are vital for maintaining classroom continuity and effectively engaging students across different countries and educational systems.