There are a lot of reasons victims of sexual assault choose not to report it. High on that list is fear of retaliation, so many victims won't come forward unless they can stay anonymous.
The criminal justice system cannot guarantee that kind of confidentiality for accusers and the accused. Further, when sexual assault is reported to law enforcement, a majority of cases never make it to trial. In fact, only 3 percent to 18 percent of sexual assaults lead to a conviction, according to research funded by the Justice Department.