 Less than one in 20 young people receive any kind of evidence-based treatment for mental health problems worldwide. And this gap is especially acute for young people who live in low and middle income countries like India. I am Dr. Kari Gonzalez and I am a youth mental health researcher. India is home to one in four of the world's young people aged under 25 years, including the largest population of students in the world. But students make up a very large, high-risk group for mental health problems and particularly depression. So we will compare the effects of peer-delivered problem-solving and behavioral activation interventions in one of the largest youth mental health trials ever conducted. This study is an opportunity to really learn how these ingredients work, in what circumstances, for whom, why, more specifically.