If your plan is to teach English abroad, more countries now require teachers to hold a TESOL, TESL, or TEFL certificate that is authenticated by the government of the country where the certificate is issued.  Unless your government agency authenticates your certificate, many countries won’t issue the visa you need to teach.

Through Global Affairs, the Government of Canada authenticates TESOL, TESL, and TEFL certificates on the list of course providers recognized by TESL Canada or TESL Ontario.

Therefore, Canadian accreditation is required and essential to teach English in Canada and abroad.  If you took a TESOL, TEFL, or TESL course that is not recognized by one of the main accrediting bodies, your job options abroad would be limited. Legalization Document of Canada can assist you