A popular teaching technique to help elementary students develop emotional and social skills also leads to academic achievement, according to a study released Thursday. In a randomized, controlled trial that examined the technique known as Responsive Classroom, researchers found that children in classrooms where the technique was fully used scored significantly higher in math and reading tests than students in classrooms where it wasn’t applied. Sara Rimm-Kaufman, the study’s lead author and a professor of education at the University of Virginia, said the results are important duri...