![](https://atesol.org/pluginfile.php/22/course/overviewfiles/ATI_Seal.jpg)
Online Advanced Certification offers an in-depth overview of English teaching theories with focus on methods and approaches to TESOL.
![](https://atesol.org/pluginfile.php/131/course/overviewfiles/ATI_Seal_Children.jpg)
TESOL for Children online certification offers an overview of English teaching theories with focus on methods and approaches for young learners.
![](https://atesol.org/pluginfile.php/16/course/overviewfiles/ATI_Seal_Business.jpg)
TESOL for Business certification offers an overview of English teaching theories with focus on methods and approaches for business professionals.
![](https://atesol.org/pluginfile.php/636/course/overviewfiles/ATI_Seal_Foundation.jpg)
TESOL Foundation is two certification courses, and includes TESOL Advanced, plus choose either TESOL for Children, or TESOL for Business.
![](https://atesol.org/pluginfile.php/638/course/overviewfiles/ATI_Seal_Expert.jpg)
TESOL Expert is three online certification courses, and includes TESOL Advanced, TESOL for Children, and TESOL for Business.