Abstract
The main purpose of this study is to develop the scale for critical thinking. The Scale of Critical Thinking was applied to 200 student. In this scale, there are total 55 items, four of which are negative and 51 of which are positive. The KMO (Kaiser-Meyer-Olkin) value is 0.75, the Bartlett test value is 7145.41, and the Cronbach Alpha value is 0.90.