It was with violent schools like Furr in mind that Texas began stationing police officers in its schools in the early 1990s, which helped start a national trend. It proceeded to accelerate on the back of persistent concerns over law and order during the decade; in 1999, after 13 people were massacred at Columbine High School, in Colorado, the federal government launched a supportive funding programme, Cops in Schools. By 2007 there were an estimated 19,000 school policemen, known as School Resource Officers, plodding the corridors of America’s schools, in addition to many regular police and private security officers.