This document summarizes John Campbell's presentation on Purdue University's use of analytics to help identify students at risk of dropping out. It discusses how Purdue developed a tool called Signals to detect early warning signs in student performance data and provide targeted interventions. Analysis of student cohorts found that those who received Signals interventions had significantly higher retention and graduation rates compared to those who did not. The presentation provides advice on how other institutions can build similar analytics capabilities and highlights both the opportunities and challenges to developing actionable intelligence from student data.