An overview of different types of institute in Thailand and the students who go to them
At the highest echelon are the international schools. Internationals are nearly always based on the British or American curricula, and employ career teachers.
Why they are so much more rewarding than kids
If anyone was coming to Thailand to teach I would recommend they teach adults as it will be a much more rewarding experience for them. You will also have lower stress levels and enjoy talking about a range of topics with students who, on the whole, want to be there.