What is the purpose of 1. Placement test 2. Progress test 3. Achivement test 4. Proficiency test ( 5. Diagnostic test

1. Placement test (You divide the Ss according to their lvl (based how well they do in the placement test) 2. Progress test (Assigned after certain unit in a certain aspect, e.g. a test covering/testing progress in terms of the use of present perfect tense) 3. Achivement test (Measures to what extent the Ss were able to achieve the prescribed/target lvl; Usually assigned at the end of the textbook (good textbooks provide achievement tests) 4. Proficiency test (Standardized to prove a lvl of proficiency, e.g. Cambridge exams) 5. Diagnostic test (Diagnose aptitude, learning styles or deficiencies)