Assessment in the classroom,whether informal,formative,or summative,has been the major source of identifying students’ strengths and weaknesses in learning a foreign language. The article tries to rationalize the current test writers training programs by elaborating on the importance of testing and assessing from the perspectives of the criteria of qualified testing system and the qualifications of test writers which reversely turns to be the challenges imposed on the language test writers. Assessment in the classroom,whether informal,formative,or summative,has been the major source of identified students’ strengths and weaknesses in learning a foreign language. The article tries to rationalize the current test writers training programs by elaborating on the importance of testing and Assessing from the perspectives of the criteria of qualified testing system and the qualifications of test writers which reversely turns to be the challenges imposed on the language test writers.