This study aims to develop a comprehensive scale of social-emotional learning. After constructing a wide range of item pool and expertise evaluation, validity and reliability studies were carried out through using the data-set of 439 primary school students at 3rd and 4th grade levels. Exploratory and confirmatory factor analysis results revealed a valid and reliable 27-item, seven-factor model including the following factors: Relationship among Friends, Perception of Friendship, Persistence, Success, Self-Management, Impulse Control and Self-Confidence. Cronbach Alpha coefficient is calculated as 856 for the whole scale.