A language test is defined as a procedure to gather evidence of language abilities through tasks designed to provide a basis for predicting real world language use. Language tests serve several purposes: as gateways for education and employment, to help teachers and administrators make placement decisions, and to allow researchers to measure language proficiency. Tests also provide a common standard to allow comparisons across students, helping students learn from preparation and feedback, and helping teachers understand what students know and don't know so they can improve instruction.