In this paper, the social and emotional learning scale developed by Coelho, Sousa and Marchante in the English language aimed at determining the social and emotional learning competencies of students (2015) has been adapted into Turkish. The study also investigates the reliability and validity of the scale. The sample of the research consisted of 534 students - 300 female and 234 male – who were enrolled in secondary science education schools under the Ministry of National Education of Northern Cyprus. The statistical package programmes were used in statistical analysis of the data obtained from the research questionnaire. The normality of the distribution of scores obtained from social and emotional learning competencies was calculated using the Kolmogorov-Smirnov and Shapiro-Wilk tests, which were also used to calculate the QQ plot graph and skewness-kurtosis coefficients of the scores Accordingly, the Social and Emotional Learning Competencies Coefficient adapted to Turkish consists of 26 items in total, in which there five items in the social awareness sub-dimension, five items in the social isolation sub-dimension, seven items in the self-control sub-dimension, four items in the social anxiety sub-dimension and five items in the establishing relationships sub-dimension.