In an increasingly globalized world, English has become an important in many countries of the world, including Thailand. Teaching English today, Thailand is weak in English language often have harmful effects. In this study I focused on the following question: What is the second language? Why English is very important? Why are Thai students weak in English? The goal of English as a second language education is to help students become proficient in English to develop intelligence and help them achieve the expected learning outcomes according to the course. Support for ESL students interested in intellectual development. Such support should be provided in a school environment which values diversity. The information is collected also discover problems and the real cause of the students has a GPA low. Speaking skills that the most Thai students need to improve. The teaching method are used to teach English at Primary, Secondary, and University are difference such as Pronunciation focus, Acquiring lexicon, Pair and group work, Emotional quotient. This report will present kind of training is given to Thai people to learn English. Moreover, English language learning that is active, useful, and fun.