Due to limited supplies, only classrooms with 10 or more students are eligible for the level 6 prize box. These boxes will be given out on a first come first serve basis! In Khan Academy, each class is just as important. To make sure it’s a fair process, the prize boxes are awarded per classroom.
Example: If you have 3 classes with 10+ students, you could earn up to 3 prize boxes if they all complete LearnStorm Level 6.
As of this moment, the offer is only available in the United States of America.