For teachers who have limited time to join onsite TESOL course, online TESOL is the best solution.
Learning to teach English using TESOL methodology, the trainee is guided step by step by the TESOL trainer through email and online chat. The time is very flexible and the trainee is free to do the task according to his/her time management.
International TESOL certificate by American TESOL Institute is gained after the trainee finish this online TESOL course and he/she will be ready to explore the worldwide TESOL experience.