Therefore, it is necessary to examine the four functions and balance them within the range that convinces the parties who need the evaluation results. Adequacy is most important when creating a balance, because evaluation results are not credible unless the adequacy is above a certain level.
The balance varies depending on the purpose of the evaluation. When deciding the value of trainees’ ability, it is necessary to ensure high objectivity and reliability. If the purpose is to obtain information necessary to improve the class, a highly objective evaluation method may fail to provide detailed information. In such a case, you may deliberately employ an evaluation method with low objectivity.