Özet:

The effectiveness of the feedback provided by principles is considered as one of the essential factors in the professional development of teachers. In this context, the purpose of this research is to develop a scale to measure the effectiveness of the feedback given by principles to teachers. While writing the scale items, the literature was searched with regard to the suitability of the definition of effective feedback and the principal's behaviors of giving effective feedback. After receiving the opinions of 7 experts for the content validity; first, the scale was applied to 363 teachers working in official secondary schools in Antakya, Hatay for the exploratory factor analysis, and then 315 teachers in Alexandria for the confirmatory factor analysis. Two dimensions, each consisting of 17 items, were obtained as the result of the factor analysis done with Principal Component Analysis and Varimax Rotation method. The dimensions were named as “process” and “function”. The total variance explained by the scale was found as 76.887%. The confirmatory factor analysis showed that the scale was in a good and acceptable fit range in terms of model fit criteria. The reliability coefficient of the scale was calculated using Cronbach's Alpha and Split-Half statistical techniques. The results obtained from both analyzes are above .90 in both the whole scale and the sub-dimensions. As a result, the analyses show that the main feedback scale is a valid and reliable scale.

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