The doctrine of English appropriateness has had a great impact on how to teach English language all over the world. However, in this global era, the intercultural interactions among non-native English users outnumber the contacts with the native ones, which greatly challenges the popular discourses of standard English. Interestingly, through analyzing the discourses in the facebook group of teachers from English speaking countries as well as the discourses on teaching standard English for Vietnamese learners on the media, the author has found out that there exists great discrimination among native and non-native teachers in Vietnam, which has already been confirmed in many recent researches in the field of discourses and identities. Significantly, this study also shows that there is a strong internal conflict among native English speaking teachers, about the choice of teaching standard English in Vietnam, through which their identities are constructed - the key factor in international language teaching and educational collaborating.