A study was undertaken to research the factors that affect the job choices of teachers in international schools in Asia. International schools can be defined as educational institutions following non-local (U.K., American, or International Baccalaureate) curriculums, the language of instruction is English, and where a majority of the teachers come from western countries. Due to an increase in expatriate employees and their children and perceived differences in the quality of international schools over local schools, the number of international schools has increased dramatically over recent decades. The research methodology included interviewing experienced international staff about the relative importance of various factors in determining their choice of where to work and whether to move from their current position. The results of the survey were that teachers job choices are influenced by salary and other financial benefits, location, and working conditions. Working conditions are likely the most important of these factors. This can be understood by using decision theory. Teachers tend to behave rationally when making job choices.