In this study, a scale developed fo

In this study, a scale developed for determining the levels of computational thinking skills(CTS) of the university students, was adapted for secondary school students. CTS is a five-pointLikert type scale and consists of 22 items that could be collected under five factors. The studygroup of this study consists of 241 seventh and eight students at secondary school in city centerof Amasya. The validity and reliability of the scale have been studied by conducting exploratoryfactor analysis, confirmatory factor analysis, item distinctiveness analyses, internal consistencycoefficients and constancy analyses. As a result of analyses, it has been concluded that the scaleis a valid and reliable measurement tool that could measure the computational thinking skills ofthe secondary school students. Moreover, the perceptions of the participants pertaining to theircomputational thinking skills are at a high level. Although students’ computational thinking skillsare at high level, their problem solving skills are at a low level.Keywords: Computational thinking, Algoritmik thinking, Critical thinking, Thinking skill