RULER is an evidence-based approach for integrating social and emotional learning into schools. RULER applies “hard science” to the teaching of what have historically been called “soft skills.” RULER teaches the skills of emotional intelligence -- those associated with recognizing, understanding, labeling, expressing, and regulating emotion. Decades of research show that these skills are essential to effective teaching and learning, sound decision making, physical and mental health, and success in school and beyond. RULER creates schools that are true safe harbors for our children. It does this by developing emotional intelligence in students from preschool to high school and in all adults involved in their education: school administrators, teachers, and support staff. Parents also participate in training so that they can reinforce the emotional skills that students learn at school. Our approach gives a unique depth and consistency to social and emotional learning that empowers school leaders and teachers to create a genuinely safe space for students to learn and grow.