The document discusses different types of tests, their purposes, and characteristics. It describes screening/admission tests which determine if a person has the required behavior to be successful in a program. Placement tests determine the appropriate level for a person in a program. Proficiency tests measure overall language ability compared to native speakers. Achievement tests determine if learning objectives have been achieved. The TOEFL test is provided as an example of a proficiency test. Guidelines for developing effective tests are also outlined.