<http://schema.org/description>
"In the Original Course View, the Retention Center helps you discover which students in your course are at risk. Based on default rules and rules you create, students\u2019 engagement and participation are visually displayed, quickly alerting you to potential risk."^^<http://www.w3.org/2001/XMLSchema#string>
<https://en-us.help.blackboard.com/Learn/Instructor/Performance/Retention_Center>