At a Glance (click to reveal) Challenge Success has surveyed more than 270,000 high school students from public, private, and charter schools across the U.S. over 10 years. Student responses show that adolescents today struggle with high levels of unhealthy stress and academic worry, inadequate sleep, and a lack of belonging. To address unhealthy stress, adults can reset their expectations, adjust the school day, and teach students healthy coping skills.