Preidt, R. (2017, September 08). Poor Health Habits Add Up to Poor Grades for Teens.

High-school students who mostly earn D and F grades may be more likely to engage in risky behavior, according to the CDC’s Morbidity and Mortality Weekly Report. Data show such students could have a nine-fold increased risk of injecting illegal drugs and a five-fold higher chance of skipping school at least once in the past month.