The teachers to find ways to develop their students’ proficiency. Teachers cannot focus only on methodology or materials, but the training of the language teachers is the most important thing. Teachers in Thailand need to develop their English proficiency with their teaching approaches. In Thailand, although there are more English language teachers, they are to be found only in Bangkok or the big provinces. The development of English language teachers is still the main aim of the Ministry of Education. Lacking qualified English language teachers was regarded as the main obstacle to develop the teaching of English. It is a severe problem especially when communicative language teaching is mainly used. This situation also occurs in Vietnam and Cambodia where the training of English language teachers is concurrent with the introduction of new methodology for effective teaching.