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  • TESOL International Association

The American TESOL International was established in Dalaware, USA by Chris Dietz and other education experts. Chris Dietz is American TESOL International's first executive director. As a professional academic TESOL institution, the American TESOL International developed professional TESOL courses and earned high reputation in TESOL area over the world.

  • TESOL Certificate

Certificate of TESOL Advanced program;

Certificate of TESOL Teaching Children;

Certificate of TESOL Teaching Speaking;

Certificate of TESOL Teaching Listening;

Certificate of TESOL Teaching Reading;

Certificate of Core TESOL Program;

Certificate of Expert TESOL Program;

TESOL In-Class Program.

When you complete any of TESOL program with a score of 75% or better on the final test for each course, you receive a First TESOL Certificate from the American TESOL International, Delaware, USA.

Online professional development anytime, anywhere

TESOL Courses offer online professional development instruction in current teaching methods and practices.

Taught by language instruction experts, the course is available anytime, anywhere. Participants may study independently, work online with a facilitator, or use a combination of the two.

TDI offers two study options:

Online facilitated

Includes support from an online facilitator, who guides the class and reviews your written assignments.

  • Flexibility

  • Convenience

  • Personalization


Deepens and expands the online experience in a face-to-face classroom. Approximately 20 hours online + 20 hours face-to-face.

  • Collaboration

  • Contextualization

  • Application & reflection

  • Small-group discussions

  • Peer teaching & teaching observation