Opening the GCE Tester assessment
To open an assessment in GCE Tester, first navigate to your Halo classroom and locate the External LTI Assessment linked with GCE Tester. This can be found on your class calendar, syllabus, or gradebook. All External LTI Assessments feature the puzzle piece icon in Halo, as seen below.

The Halo External LTI Assessment has a blue "Open Assessment" button. Click it to launch a new tab in GCE Tester.