Despite increasing attention on chronically low-performing schools, the efforts to turn these schools around have not always been met with success. School turnaround requires comprehensive and effective campus interventions. The research purpose of this study was to understand the dynamics of a turnaround intervention. Specifically, through a clustered randomized control trial (RCT) design, we examined whether an on-site leadership intervention can turn around campus. We employed both a traditional statistical approach and visual analysis to examine a set of observation data collected from treatment and control schools. The preliminary findings indicated the positive effects for turning around schools with the leadership intervention with the treatment schools.