Assessment and learning

we know that we should consider testing principles while preparing such as validity, practicality, authenticity, etc.
we can use rubrics to be fair while evaluating but we should be careful while choosing right rubric because it affects our evaluation. If we choose a rubric which doesn't evaluate what we have studied during the class session this means that the result will be useless. In order to be a good teacher we should train ourselves in a best way in the field of assessment.