Emma Bowman

For the past three weeks, students across India's capital have been attending a radical new course: happiness.

The Delhi government introduced "happiness classes" in an effort to shift the country's academic focus from student achievement to emotional well-being. In a country that uses standardized testing to determine student success, offers a limited number of seats in top universities and sets high expectations, educators have been seeing mental health consequences.

Jimmy Fallon made a surprise visit at Marjory Stoneman Douglas High School's graduation ceremony on Sunday, nearly four months after the students survived a shooting that killed 17 of their classmates and teachers.