[ID:0558] With well over a billion people learning English worldwide, it’s safe to say that the TEFL (Teaching English as a Foreign Language) market is booming. It is relatively easy to get a job teaching in any country where English is not the first language. The field is wide open, both for experienced teachers and for world travelers looking to finance a sojourn abroad. In many countries, English is taught from elementary school right up to university level, as well as in large companies, private language schools and one-on-one tutoring sessions.

English is the international language of business, science and air traffic control; and over the past few decades, it has become the world’s dominant language. The liberated countries of Eastern Europe turned to English after rejecting Russian after the fall of the so-called “Iron Curtain.” And in countries as far-flung as China, Japan and Namibia, English has become one of the focal points of education. Thus, native English speakers possess a much sought-after commodity: literally hundreds of millions of people are out there waiting to learn...