This is a popular option:

Exciting opportunities are available throughout the world in traditional MK schools and international schools. The greatest benefit is eternal. It is likely that many of the students you teach will also one day serve overseas.

Often teachers like you have earned a sabbatical but never take it. Some schools have a sabbatical policy, but actively discourage teachers from taking one.  But you would not want to let school (in this case teaching in school) get in the way of an education.  

So, have you ever thought of taking a year or two leave from your current teaching or administrative position and using your expertise internationally? Imagine the knowledge, growth, and understanding you add to your teaching career! Be bold.

Take the step of faith—just one or two years—and join the many other teachers and administrators currently serving overseas!