You don't have to learn it to native proficiency or other levels. But if you already have experience of language learning working in a multicultural team or living and working abroad then this will be more helpful than a degree especially in an unrelated subject. Many years ago when I got my adult language teaching certificate they preferred people to have a degree. But they did admit one student into the course even though she only had a high school diploma and she had just graduated.
Wondering what the real barriers to taking a course are? It has nothing to do with having a degree but trying to Phone Number List learn a second language on your own. No language learning experience. There is no place in the course. that a person who has never learned a language should not teach a language to others even if their native language is English. If you do have a degree you can mention it somewhere. But it shouldn’t be the first thing people see when they arrive on your site.
Because when so many teachers have degrees and teaching credentials it doesn't actually help students make decisions about whether to take a class with you. The hardest part about teaching English to students online yourself is finding students. For this you need a comprehensive website and you need to find effective ways to advertise your services.