Worldwide Teachers Development Institute 
Offers the following on-line courses:
- Certificate
in Teaching English as a Foreign Language, CTEFL
- Certificate
in Teaching Business English, Cert.TBE
Courses Offered Monthly
Earn
your internationally recognized TEFL Certificate Online. Teach Your
Way Around The World!
This
school also offers a free online introductory course for those interested
in teaching English abroad.
http://www.bostontefl.com
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