August 5, 2009 4:20 pm DC Schools Expands STD Testing Program When D.C. high school students head back to class for a new school year, they will have the option of getting tested for sexually transmitted diseases. Local 2:14 Opioid crisis: National drug take back day on Saturday 2:55 Concussion treatment: Returning to school and limiting screen time may help, study finds 2:39 What to know about ADHD medication and pregnancy 2:08 How to pick the best running shoes for outdoor exercise 3:41 Nail biting: A psychiatrist shares tips