This question pool comprises 14 topics. Each topic has four different quizzes. Students submit their responses in the final quiz, and if they meet the badge criteria (70%), they earn the related badge. By enabling the access of a badge every student who formerly fulfilled the badge criteria, got a badge as well. Three students got the super-Badge!
If you need more information check the Article from Kevin Browne: 4. Benefits to Using Badges in the Classroom.