It recently popped up on a forum about how BJCP exam scores are tabulated. It pretty much works like this. If you have a legacy exam taken prior to April 2012 your score was tabulated as 70% written and 30% taste and will stay that way until you retake the exam. If you retake either part the new calculation is 50% written and 50% judging. If you had a really high written score and a low judging score the old system was your friend. Now you must perform equally well on both parts to advance.
Note: If you have taking the entrance exam then your score and rank will be determined by your judging examination, but capped at the rank of Certified until you take the Written Proficiency Exam and then your scores will be calculated using the 50/50 methodology.