Practical strategies for teachers to enhance the degree of reliability and validity in assessment

Practical strategies for teachers to enhance the degree of reliability and validity in assessment Ekaterine PIPIA* In the context of measurement, reliability refers to consistency and stability of the scores, not the tests themselves, while validity refers to the accurate interpretation of test scores (Reynolds, Livingston & Willson, 2009). The concern of reliability together with validity stems from the original nature of assessment to provide precise information that helps educators make necessary changes to enhance the quality of edu-cation. The paper underlines that reliability and validity of this information is of great importance in decreasing the degree of measurement error that is inherent in all measurement. Therefore, the role of educational professionals is to identify the sources of measurement error and minimize their impact on the obtained sources. The research revealed that the teachers need to apply different approaches to eliminate the sources of measurement errors and to estimate the reliability and validity of assessment in practice