In the world of globalization era, English has increasingly become the medium in every domain of communication, both in local and global contexts. As a result, the demand for speakers using English effectively is necessary in every country. Teaching and learning English, except for the native language, is thus crucial for communicative purposes to meet the demands of global economics and to cope with the growing local, national and international demands for English skills. In Thailand, English is considered a foreign language, and is used for the purposes of academic advancement, career advancement, and traveling abroad. To cope with the growing local and international demand, a number of efforts from all parties involved have been made to the Thai educational system to help boost Thai learners’ English performance. However, the National survey conducted by the Office of Educational Testing of the Department of Curriculum and Instruction, the Ministry of Education during the years of 1997 and 1998, showed that Thai learners, being assessed against standardized benchmarks of achievement, had unsatisfactory proficiency in the four skills of writing, reading, listening and speaking (Wiriyachitra, 2001). This result was repeatedly substantiated by more recent studies (e.g., Bolton, 2008; Bunnag, 2005a, 2005b), indicating that, based on the scores of two international standardized tests: TOEFL and TOEIC, Thai test takers’ scores were significantly low, compared to those of Southeast Asian countries. Therefore, a focus on the development of literacy skills in English among Thai learners is central to language pedagogy. Of all four key language skills, speaking is deemed to be the most important in learning a second or foreign language. As stated by Ur (1996), speaking included all other skills of knowing that language. In Thailand, the speaking skill is a critical part of language learning and the teaching process. In other words, it is extremely difficult for Thai learners to master the English language in terms of speaking and listening. This is because the medium of instruction in the classroom is mostly Thai, as many teachers teaching English to Thai learners are mainly non-native speakers, leading to the use of unnatural language and creating the failure of genuine interaction in the language classroom. Also, Thai learners in general have few chances to interact with English native speakers. The exposure to English of Thai learners is thus somewhat limited. That is why a lot of popular programs and foreign language teaching methods try to replicate the target language environment through immersion programs, bilingual school curricula, and computer-assisted teaching (Lapkin et al., 1990). However, the fact that many non-native speakers use the rating criteria based on native speakers’ standards to measure learners’ oral proficiency, according to Kim (2005), using this benchmark is not appropriate for the actual use of English in an international context. Therefore, it is important for teachers and educators in general, and test designers in particular, to reconsider the purposes of English speaking tests, and the standards of assessing learners’ speaking skills. Since a number of factors are responsible for limited success to speaking competence, this paper specifically aims to present teaching English speaking in the Thai context, and to explore the roles of speaking test formats and major problems of Thai learners found in speaking tests.