Many studies, done by researchers, have concluded that there is correlation between Thai students’ behaviors and the negative effects on learning English. Nowadays, one of the biggest problems of Thai students is their shortage of English proficiency which really needs to be solved as soon as possible to increase the country development. According to Deerajviset (2012), The Ordinary National Educational Test (O-NET) in 2012 revealed that the English average score of Thai primary school students and high school students is considered as “very low” because the scores were 36.93 and 22.07 out of 100 respectively (p.49). This means Thai students’ English proficiency is at risk obviously. Until now, one of the most outstanding Thai cultures is the fear of losing face because it can decrease one’s self-confidence which is considered to be unacceptable. According to Anyadabalu (2010), foreign teachers should acquire basic knowledge of Thai culture and Thai notion of “lose of face” because they can embarrass or make Thai students lose face when they make a mistake in a classroom (p.870). Moreover, Thai students seem to have a negative thought on English learning because of the second language learning stereotype. Pawapatcharaudom (2007) explained that such negative stereotyping can turn a “self-fulfilling prophecy” for the students who are stereotyped and are placed to be at risk on learning language (p.11). Also lack of motivation from surrounding people such as family, teachers, and government can greatly be against the learning progress of Thai students. Especially, Thai students cannot fully improve their English proficiency at school due to lack of motivation from teachers. The students have rare chance to speak English because lecturers and teachers still use Thai as the instruction for teaching English (Kakkar, n.d., p.24).