A teen's death by suicide with her father's gun divides a small Missouri town

For-profit companies are making good private schools available even to Africa’s poor. They can do it – and can do it on an enormous scale – by hiring neighborhood residents to teach, and scripting out every word of every lesson on an e-reader.

Blue Engine, which places recent college grads as full-time teaching assistants in New York City public schools, is helping poor students thrive in college. They focus on small teacher-student ratios, frequent feedback for teachers, and a concentration on 'gateway' courses associated with success in college.

Colombia has attempted to decrease murder and homicide rates by setting up curfews for teenagers, forcing bars to close earlier in the evening, and creating gun laws to prevent the carrying of weapons. As a result of this epidemiological, data-driven approach, along with other governmental factors, the homicide rate has decreased significantly in most of the cities in which it was implemented.

Adolescent smoking remains a challenging health problem because of the allure of cigarette branding. Australia is piloting the transformation of cigarette packaging with a generic look that reduces the appeal of smoking. In Florida, the Truth campaign has exposed that cigarette companies targeted teenage consumers and, in response, created a set of new advertisements that presented the cigarette industry with transparency.

With pressures of depression, anxiety, and suicide on the rise, teenagers in the United States are challenged to find the comfortable outlet and accessibility for emotional support. The Crisis Text Line offers a counseling service through mobile texting, which reduces the shame that can occur when approaching an in-person counselor, and expands access to professional mental health counseling nationwide.

For first-time youth criminal offenders, the traditional American jury falls short in encouraging behavioral change and may even set the juvenile on a course for repeated crimes. Washington, DC’s Youth Court is a jury that tries juveniles for minor non-violent offenses and offers peer pressure to prompt positive behavioral change. The DC Youth Court is one of many in the United States that reduces crime and future court costs.

Child-mentoring programs around the United States have helped at-risk youth during crucial years of development. However, New York City's Friends of the Children has improved the model by placing at-risk youth with adult mentors for 12 years. The forged relationships between mentor and developing child have greatly reduced the probability of teenage pregnancy, incarceration, and school drop-outs, and is cost saving.

In Clayton County, Georgia, the Second Chance Court is using a different tactic to give offenders the opportunity to move forward. The program, started in 2010, allows selected teens to attend counseling and classes – often with their parents – centered around self improvement and appropriate behavior. Collaborating with a community organization, the Second Chance Court has been able to reduce recidivism in youth.

A program in Philadelphia is pioneering new ways to treat the urban wounded. By seeing it as PTSD, and not pointing fingers, the city is using mental health tools to decrease violence and heal communities.

Delaware has been working to make sure that all college-ready graduates, regardless of socioeconomic status, make it to college. With financial reasons standing in the way of many qualified students, the state has worked on multiple levels to make this a possibility.