And Why Trinity CertTESOL Is Trusted Worldwide Choosing a TEFL or TESOL course is one of the most important decisions you’ll make at the start of your English teaching career. It affects not only what you learn–but also how schools, employers, and even visa authorities, view your qualification. Yet many aspiring teachers focus on the wrong things: course length, price, location, or promises of quick job placement. One crucial factor is often overlooked: External moderation. This single...