Abstract IntroductionSport programs were piloted at one-hundred secondary schools targeted at students who had disengaged from sport. The aims of the study were to identify what causes youth to disengage from sport and the key influences, barriers and enablers to increasing sport engagement and delivery in the secondary school environment.MethodA mixed method approach was taken and data collected from the following stakeholders:Surveys (students) (N= 6,713); Surveys (teachers) (N=282);Surveys (parents/guardians) (N=1,345);Focus groups (N=60) (students N=566);Semi-structured interviews (PE teachers)(N=200);Semi-structured interviews (sport deliverers) (N=92). Standard qualitative and quantitative analysis procedures were conducted. ResultsThe secondary school environment is a complex and pressurised setting in which to deliver sport. We found that sport participation and delivery becomes more ‘stressful’ for all stakeholders, and the focus on competition in sport intensifies, shifting away from the social and ‘fun’ elements. There was a perception from students that sport has failed to modify its offerings (both those inside the school environment and those in the community) to address their motivations, needs and barriers. ConclusionSecondary school sport programs should not be fully prescribed by a National Sport Organisation, but the deliverer given the flexibility to build a relationship with the PE teacher and the program modified to address each school’s context and student cohort. Further, deliverers should be skilled at building a positive group dynamic during the program, and contribute to building a positive sport culture with the wider school community. External funding details Australian Sports Commission