Student responders allow teachers to collect formative and summative assessment data in real-time through multiple choice, true/false, and other response types. The responders provide instant feedback to teachers on student understanding, which enables teachers to adjust instruction as needed. The assessment data collected through responders gives teachers valuable insights into student mastery and areas needing reteaching or review. When paired with learning goals, effective feedback from responders ranks as one of the most important factors for increasing student achievement.