Out-of-school learning activities have started to diversify in all areas of learning at an increasing rate. Out- of-school learning diversifies the one-dimensional structure of the classroom and school environment, enabling learning that leaves a lasting impact for the learner. This research aims to develop the Out-of-School Learning Regulation Scale (OOSLRS) which can be used in this field while providing basic information about out-of-school learning. The study group consists of 340 teachers working in different branches. In this study, Kaiser-Meyer-Olkin (KMO) coefficient, Barlett's Sphericity test, Explanatory Factor Analysis (EFA), Cronbach's Alpha, substance total correlation, Confirmatory Factor Analysis (CFA) operations were performed to improve the out-of-school learning regulation scale. An Explanatory Factor Analysis (EFA) was performed on the scale structure of the 29 substances that make up the final form of the OOSLRS and it was determined that the scale was in a four-factor structure. Cronbach's Alpha intrinsic coefficient of OOSLRS was calculated as 0.87 and the sub-factors of the scale were Information, Planning, Application, and Evaluation dimensions, respectively. Cronbach's Alpha values for these sub-dimensions of the OOSLRS are Information dimension 0.86, Planning dimension 0.81, Application dimension 0.73, and Evaluation dimension 0.77. Given these relevant values and controlled by Confirmatory Factor Analysis (CFA), it was concluded that the structure of the OOSLRS consists of four sub-factors.

Out-of-school learning, OOSLRS, Scale, Validity, Reliability.