Completar frases Principles of Evaluation (D)Versión en línea The principles of evaluation, and important concepts such as validity and reliability. por Carlos Antonio Alvarado García 1 results purpose accuracy impartial limitations measures techniques consistent There are different principles that teachers should take into account when evaluating . For instance , the instructor must be clear about the of evaluation . Furthermore , a variety of evaluation should be used since it is not possible to evaluate all the aspects of achievement with only one evaluation technique . In addition , teachers should know about the strengths and of the techniques . Finally , to have credible evaluations , teachers should be when assessing students . There are two other important concepts that will be discussed in this class ; they are validity and reliability . Validity refers to the of your measurement ; that is to say , it what it's supposed to measure . On the other hand , reliability focuses on .