Our public school system employs about 46,000 full-time and 36,000 part-time officers across the country. In theory, these officers supervise lunchrooms, coach sports, teach drug and alcohol awareness and, in many situations, become confidants to kids who need an ally at school or don’t have the support they need at home due to myriad different reasons. But, as the incident in South Carolina indications, the existence of SROs in schools is not always positive.