This paper first discusses the Common European Framework of Reference Languages: Learning, teaching and assessment CEFR 2001 and the revisions to this framework in CEFR 2018. It then looks at the Frameworks of Reference for English Language Education in Thailand, Japan, Vietnam, Malaysia and China which are based on CEFR. The main purpose of this study is to highlight the potential issues that need to be addressed including international forms of assessment such as TOEFL, IELTS, TOEIC and how the rating in CEFR can be compared to the scores obtained in these high-stake standardized tests of language proficiency. The indications are that using the same proficiency scales as the basis for rating scale criteria may lead to perceived equivalence but does not necessarily lead to a greater comparability of shared criteria. The implications from a number of studies are that different tests use similar criteria that are based on the same descriptors, but the comparability is only assumed.