There is an office on University West in Windsor called Worldport ESL which claims they have a TESL Certificate Program which was launched for the public in 2000. But beware! Reza Mazloom-Farzaghy, Accreditation Administrator for TESL Ontario, says that Worldport ESL is not accredited by TESL Ontario. We also checked TESL Canada's website, but this institution does not appear on TESL Canada's list of recognized institutions.
When researching your options for TESL training, please refer to TESL Ontario's list of accredited TESL training programs.