How do I switch from a language school in Bangkok to a university in Chiang Mai while managing my Extension of Stay?

To switch from a private language school in Bangkok to a university in Chiang Mai while maintaining a valid Extension of Stay based on an ED visa, you will need to follow a specific process. First, obtain a cancellation letter from your language school indicating your end date of study. You should visit the Bangkok immigration office approximately 10 days before this date to cancel your current extension of stay. After this cancellation, you must promptly travel to Chiang Mai and go to the local immigration office with your university documents to apply for a new extension of stay. It is important to note that you cannot cancel your Bangkok extension at the Chiang Mai immigration office.