At the end of Levels 1-20 are level assessments consisting of 10 questions. The questions will be a mix of multiple-choice and true/false questions. You must score at least 75% or better (at least 8 out of 10 questions correct) in order to pass and go on to the next level.
If you fail a level assessment, you can take it again. There is no limit on how many times you can take a level assessment, and you don’t have to pay again to take a level assessment more than once.