TESOL Certification Programs to Teach English OverseasATI teacher training for native fluent English speakers can be completed with either a high school or college degree. Some employers may require country specific passports to gain employment. ATI teachers can make the most money in Asia or The Middle East. Teaching English overseas is often the gateway to entering the global economy. Teaching English in a foreign country gives you a leading edge in the global job market, opening doors for various other employment opportunities.