The Collaborative for Academic, Social, and Emotional Learning (CASEL) defines social-emotional learning (SEL) as the process of acquiring and applying knowledge, skills, and attitudes to: 

• Develop healthy identities

• Manage emotions

• Achieve personal and collective goals

• Feel and show empathy for others

• Establish and maintain positive relationships

• Make responsible and caring decisions

CASEL is a non-profit organization that develops frameworks and resources to guide educators, families, and communities in promoting SEL. Their framework is widely used in the United States and abroad. 

Some examples of SEL skills include: 

• Self-awareness: Recognizing one's own emotions, thoughts, and values, and how they influence behavior 

• Relationship skills: Establishing and maintaining healthy relationships, communicating clearly, listening actively, and working collaboratively 

• Responsible decision-making: Making caring choices about personal behavior and social interactions, considering ethical standards and safety concerns 

• Stress management: Identifying and using strategies to manage stress 

• Self-discipline and self-motivation: Exhibiting self-discipline and self-motivation 

• Setting goals: Setting personal and collective goals 

CASEL's Districtwide SEL Framework outlines four focus areas to help schools achieve systemic SEL, including "Practice Continuous Improvement.

(casel.org)