A good Evaluation

(Summary)

A good evaluation should have Validity, Reliability, Practicability, Fairness and Usefulness.

Validity:  It measures the behaviour described by the objective.

Reliability:  It measures if the test or examination produces the same result under different conditions, it gives reproducible scores with similar populations of students. Reliability and validity are closely related,  a test can be totally reliable and have very low validity, a validity must be reliable, but a test can be reliable but may not be valid.

Practicability:  An evaluation procedure should be realistic, practical and efficient in term of their cost, time taken and ease of application.

Fairness:  Evaluation must be fair to all students and it is possible by an accurate reflection of the expected behaviours as desired by the course objectives. Students should know exactly how they are going to be evaluated, they should be provided with information about evaluation such as nature of the materials on which they are going to be examined, ex: context and objectives.

Usefulness:  Evaluation must be useful to all students, there must be feedback available to the students to help them to prove their current strengths and weaknesses, so in that way students can think of further improvement.