When You Need a TEFL Certification? \t1.\tIf you’re a qualified teacher: No, you don’t need a TEFL certification if you’re already formally qualified to teach. \t2.\tIf you have a degree in Linguistics, English, or Education: No, you won’t need a TEFL certification to teach English abroad. \t3.\tIf you have a degree in another field: Yes, you’ll need a TEFL, CELTA, or Trinity CertTESOL to teach English abroad. \t4.\tIf you don’t have a degree: Yes, you’ll need a TEFL certification as there are a