GoGuardian is an instructional tool for teachers to use when a student is on a Chromebook, which helps keep students on-task and away from distractions. To achieve this, teachers can use the Screen Viewer for a live stream of student browsers, review the Activity Timeline to see usage information, and guide instruction with Tab Control to open specific websites on student devices. Additionally, teachers can use Attention Mode to darken screens and lock the Chromebook, helping to redirect students' focus back to the lesson.