10. I’ve had many interviews but keep missing out on the job. What am I doing wrong?
You may be doing nothing wrong. It may simply be a case that you have narrowly missed out to someone with a little more experience or with slightly more convincing answers, etc. It is important to note than many International Schools will choose a candidate based on his or her suitability for their school above all else, i.e. someone who has worked in a school with a similar structure before or in the same country. It may just be that you have not yet interviewed with the school you are most suited for.
However, if you continue to be unsuccessful, it may be wise to consider how your referees are commenting on you. Although rare, there are cases of headmasters sabotaging teachers' chances of securing positions by giving unfair and dishonest references. If you have any doubts about the integrity and honesty of your referees, you may need to consider removing them from your CV and sourcing somebody more reliable.