It is understood that teaching has a strong partnership with testing. Scholars emphasize that the two are so interrelated that working in one in the absences of the other is hardly possible. This is, almost all instructional processes involve a testing element of one type or another. Therefore, the main of this book is to explore how far language teachers construct and mark composition tests according to the principles forwarded by language testing. In doing so, the book focuses on English Department in Kotebe College of Teacher Education. Following this, the findings of the research are thoroughly dealt.