Analysis the performance evaluation scale for string instruments in terms of validity and reliability

In this study, the performance evaluation scale developed for the string instrument classes was analysed in terms of validity and reliability. The scale, constructed with the help of the evaluation degrees designed by the researchers; was used in evaluating students in final examinations in two different departments by 6 instructors in total. Statistical measurements related to the resulting data were made and reliability of the scale was tested. In the statistical process, firstly alpha factors of reliability related to the lower and the overall degrees of the scale, and then the correlation factors between the scores given by the instructors were calculated.As a result of this study, it is found out that the measurement presents significantly valid and reliable results.