1.Selection —-They select learners to proceed with further education or join other colleges.

2.Placement —- Each candidate is assigned to a respective program using a certain criteria.

3.Diagnosis —- Involve comparing the individual’s performance in several areas in order to determine relative strength and weakness.

4. Hypothesis testing —- Test results are used to make deductions or build hypothesis( predictions).

5.Evaluation —- To determine the topics not well understood or methodology.

6.Stimulate learning

7.Regulate teaching programs

8.Decision making.