Michelle Groskopf. Getty. MH/Illustration 6 min read O N THE DAY I visit the Willows Community School, a K–8 private school in Los Angeles, the students are a whirlwind of emotions, feeling everything from nervous to satisfied to exhilarated to chill. I know this because I checked their “Mood Meter,” right at the front of the room. The kids at this tidy school are at the forefront of a movement to integrate social emotional learning into the curriculum in the classroom. Students here talk about how books make them feel or what historical figures must have felt, and students in the Lower Elementary start each and every day by plotting how they’re feeling on that big mood chart. There are 100 options on the grid, from proud to glum, apprehensive to serene. Their answers are all over the map, a far cry from the responses you probably got this morning to every “How you doin’?” you handed out.…