School buses received national attention again today, and for one of the worst possible reasons: the murder of 20 school children and six adults at Sandy Hook Elementary School in Newtown, Conn., an incident that is being reported as the second-worst school shooting in U.S. history.

I periodically serve as an expert witness and the experiences have been most revealing. In contrast to fact witnesses, courts generally allow wide latitude for attorneys to challenge and question expert witnesses at depositions and trials.

High school students in South Carolina are taking advantage of a converted school bus to stay in school and stay out of prison.