What is the name of the certificate? For example, TOEFL, TOEIC, this is the name of the certificate. Although it is also an abbreviation, this letter combination has been registered as a brand trademark, and only ETS can use it in the world. The abbreviation IELTS is a registered trademark and can only be used in Cambridge in this world. If others want to use it, they will come to court immediately.
But TESOL/TESL/TEFL, just an English abbreviation, is not registered. It means that there is no certificate name in the world, registered as TESOL/TESL/TEFL and so on. If you still want to register after reading this article, you can only be persuaded. You really think too much. You can't register now.
This brings a problem. There are dozens of license issuing agencies for the abbreviations of these names. If you don't believe me, check it online yourself.
Take TESOL as an example, there are IEERA, International Teachers' Union and Trinity College earlier. The emerging one is the American TESOL Alliance.
As for TESL/TEFL, each one is a bunch of issuing units.
Therefore, the certificate name is not important at all. The key is to see who sent it to you. Who trained you? If it is issued by authorities such as Sany and Oxford. Whatever you call it, it works. But if it's from an unknown organization, It's no use calling anything.
TESOL, in particular, is in a mess now, and you can get a certificate by taking classes casually in China. But does it work? Online publicity has been recognized by the United Nations, the European Union, the Bureau of Foreign Experts Affairs and tens of thousands of institutions in dozens of countries. Did you see the evidence? In fact, there is no legal benefit at all. Just apply for one at an international school.
Don't think that learning some games in children's English training institutions on the street and getting a TESOL certificate are really valuable. Formal institutions don't even look at it.
What certificate is useful? Of course, Certa succeeded. This is from Cambridge, CELTA is a clearly registered name. Only Cambridge in the world can use this name. Certa training, entry is a threshold, English at least C 1+, which is the minimum requirement. Then there is a written interview, after which you can go to class. A month's closed training has ravaged you. . . Homework that can't be finished every day, assessment that can't be prepared. Very strict, very strict, very strict, not harsh. After Certa's baptism, there will be rules in class.
So, whether the TESOL in your hand is useful or not, you will know for yourself.