The purpose of this study is to develop a five-point Likert scale called 'Curriculum Fidelity'. For this purpose, a draft scale consisting of 65 items have been represented to the expert opinion firstly and it has been decided that 15 items should be excluded. The remaining 50 items have been given to 249 teachers and the maximum likelihood has been used in the factor analysis of the scale in order to examine the structural validity. The remaining 28 items have been grouped into 3 factors. The explained variance is 62,753 of the total variance. The Cronbach's Alpha value is 0.94. Furthermore, item-total, item-remaining and item discrimination have been found significant. After exploratory factor analysis, it has been found that goodness of fit indexes are acceptable according to the results of confirmatory factor analysis (RMSEA= 0.075; CFI= 0.90; RMR= 0.08; GFI= 0.79; AGFI= 0.76; NNFI= 0.89).