How much can I earn at an international school in Bangkok?
Presumably you are talking about ‘true’ international schools rather than a school that has the word ‘international’ in its name purely because it looks good? Well, I knew a teacher about three years ago who was earning well in excess of 120,000 baht a month plus a benefits package that included a nice two-bedroom apartment, paid flights home and free international school education for his kids. I do know of international school teachers earning less than this amount but never by that much.
Note that international school positions are quite difficult to pick up locally. The schools - certainly the better ones - tend to recruit directly from abroad through events such as education and job fairs, etc. Some schools here in Bangkok have a strict policy not to hire locally. Oh, and you will certainly need to be well-qualified.
