There are various reasons why somebody may want to work overseas, such as their partner getting a job in a different country or just for the experience of being in a foreign country, but besides the reasons why this is a decision being reached, a lot of things need to be considered, investigated and prepared for before you actually transfer to a different country and their education system.
Firstly, you may want to have a look at what you can expect in terms of wage, employee rights, and common working conditions; which can all vary a lot from place to place (as you can learn about here). These are all important and worth being the first thing you investigate; after all, these facts could be your most significant deciding factor. Of course, you should bear in mind that though your wage may be smaller in a different country, if that smaller wage is accompanied by vastly lower living costs it may still be a net benefit for you to make the move.
Secondly, you’ll need to look at the requirements for moving to and working in a different educational system. These requirements can vary a lot, and some of the teaching certification you’ve attained to work in one system may not be applicable in another. Usually allowances are made for comparative teacher training experience, but seeking advice is often the best bet.
Lastly, you should seek advice from those that came before you. You’ll often find that teachers who’ve already emigrated to the country you’re thinking about going to will be able to give you useful information on what to expect (helping you with the culture shock) and advising you on good recruitment agencies and more.