Nope! You don’t need to know a second language in order to do a TEFL job abroad or online. You may feel you’d like to learn some of the local language before you travel – this will definitely help with integrating into your community further and is always well received by your host country. Never underestimate how far a simple “hello” or “how are you” in your host country’s language can get you – it shows effort and consideration. But as far as speaking a second language in the classroom, all you’ll need to know is English!