Also, there are many cases where recruiters will go on to other fairs and contact you only after they have attended them all. It is tough to leave a fair without a job after spending all that time, money, and emotional energy, but don't give up hope. There are also hiring fairs held in June, and an agency might contact you as late as August to fill a vacant position. The important question to ask about salary is not how much you will earn, but how much of that salary will you be able to save. Salaries in Bolivia, for example, are incredibly low because it is very cheap to live there, whereas in Japan, you may be offered double the salary but be crammed into a tiny apartment and not be able to afford meat.
Schools hire single candidates as well as married teaching teams.
Those without children stand a better chance than those with, but there are many teaching families overseas. I would only be concerned if you have more than two children, which seems to be the acceptable number. If you do, then make sure that you have qualifications that are in demand, a lot of experience, and some great recommendations. If, for example, you are a librarian and your spouse is a music teacher, then technically you will both be sought after but the odds of finding a school that needs both a librarian and a music teacher are quite small. If, on the other hand, you are a librarian and your spouse is an elementary school teacher or is certified in a number of areas, then you increase your chances greatly.