Student Signed Up with Wrong Class Code If students accidentally sign up with the wrong class code, they can update their class code from their account. 1 Have them log in to their account at TeachBanzai.com and click on My Profile. 2 Click on the class code. 3 A "Change Class Code" window will open. Enter the correct class code, and click OK. The student’s account will be immediately relocated to your class, and their progress will appear in your grading interface.