The grading rubric used in the app is solely for leaderboard purposes and is never meant to replicate the scoring rubric on NBCE exams. NBCE exam uses a very complex logarithm not disclosed to students. 

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CBR keeps scoring very simple giving users 10 points for each correct answer and some bonuses when the user answers 3 or more questions in a row. See below the following structure for bonuses:

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3 questions = 10 points
5 questions = 10 points
10 questions = 10 points
15 questions = 25 points
20 questions = 25 points
30 questions = 25 points
40 questions = 50 points
50 questions = 50 points
60 questions = 50 points
70 questions = 100 points
80 questions = 100 points
90 questions = 250 points

 

Vignettes points + bonus structure is different:

 

1 Vignette:
Each correct answer is 10 points. There are 3 answers per question so there is a maximum points of 30 per question and 1 vignette contains 3 questions for a maximum amount of total points of 90 + bonuses. The structure for bonus points goes as follow: 

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3 multiple choices = 30 points
6 multiple choices = 60 points
9 multiple choices = 90 points

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