Mastery of Language course is designed for master’s graduates of English. Its ultimate objective is to reinforce students’ level of academic proficiency with special emphasis on the advanced formal aspects of language use. The course is divided into two semesters in which students are exposed to a wide range of advanced language structures and functions intended to help students improve their grammar and lexis in both spoken and written contexts. Therefore, it stresses language practice to eventually achieve a substantial level language usage, vocabulary reception and production needed for both spoken and written communication. Moreover, it helps students to explore variety of communicative contexts related to critical reading, public speaking, academic correspondence and writing book review. Mastery of Language is a prerequisite course for students to prepare and pursue Master’s academic studies.