Make sure you travel with up to date legal and practical information. It is difficult to predict problems that may arise unless a teacher has some understanding of the workings of a country and its educational system. Before taking the plane, a teacher must:
Understand Visa Requirements: Every country has different laws concerning foreigners and work. Most countries ask for non-tourist visas for long-term stays. Consulates provide this information.
Inquire About your Accommodation: Teachers who have found jobs and housing from their own country must be sure of the type and price of accommodation that has been arranged for them. Some schools deduct money from pay for housing; others expect teachers to find their own accommodation and some give help and advice.
Understand the School Calendar Year: Southern Hemisphere schools have different school years to Northern Hemisphere schools. An American teacher, hoping to work in South Africa in September, will be surprised to learn that the school year ends in December and that there aren't any teaching jobs available.
Research Cost of Living and Salaries: It's important to know how much an acceptable monthly salary is and how many teaching hours are required for that salary. Teachers must calculate the value of a salary and compare it to the cost of living in the country they want to teach in to understand if their choice is possible or not.
Learn What Teaching Qualifications you Need: Every country has different requirements for TEFL or TESOL certification. To complicate matters, every school has different ideas about what they want from their teachers. There are a lot of forums, like Dave's ESL Café, where teachers can find this type of information.
Make Sure you Have Medical Insurance: Every traveller should have an emergency medical insurance and know how and where to make claims if there is a problem.
Teachers should relax and have fun while teaching. A teacher who is enjoying himself will have students who want to learn and, students who want to learn are the best students there are.