ghost kid
n.— «The thing that scares me most as a superintendent, as a person, as a professional educator, are kids that are called ghost kids, kids that walk around our schools and don’t have any attachments or association with anybody. I don’t know whether we have them or not. But a school resource officer program would be another resource to provide connections with kids, breaking down some of the stereotypes of law enforcement.» —“Do we need a cop in school?” by Chris Strunk Ark Valley News (Valley Center, Kansas) Oct. 27, 2006. (source: Double-Tongued Dictionary)