attitudes bibliography careereducation casestudies computersoftware continuingeducation derry dropoutbehavior dropouts education(secondary) educationalchange educationalsurveys employment highschoolattendance highschoolgraduates highschoolstudents hispanicamericans mexicanamericanstudents mlcm2006/10827 motivationineducation northernireland predictionof ruralchildren schoolattendance schoolimprovementprograms self-culture socialconditions statistics students success testing unitedstates youth youthwithsocialdisabilities