Nobody except NCEES knows the cut score for any of the tests.
Here is some information from the GA board FAQ's:
Q. Does a passing score of 70 mean that 70% of the questions were answered correctly?
A. No. The required number of points (questions answered correctly) needed to pass the exam is determined in terms of the total points available on the exam. The required number of points needed to pass the exam is referred to as the “raw passing score.” This raw passing score is always reported as the converted or scaled score of 70.
Q. Making this score conversion is confusing. Is it necessary?
A. Score conversion to a uniform scale is a common practice. The practice is used so that the passing score on every administration of the exam is always the same. Furthermore, some licensing boards are required by law to use 70 as the passing score. The NCEES has used this practice for many years.
Q. From the questions and answers above, I gather that the raw passing score can vary. Why is this?
A. The raw passing score can vary on exams that are no-choice. The no-choice format has been used for many years by the NCEES on the Fundamentals of Engineering exam and the two Land Surveying exams. At the present time (2001) the PE exams are in the process of converting to this format. The no-choice format permits the NCEES to perform a statistical analysis and use it to adjust the raw passing score to account for variations in the level of difficulty of the exams. So, if an exam is more difficult than usual the raw passing score is lowered accordingly. This means that the standard required for passing remains the same.
Q. Traditionally, for the PE exam in civil engineering you had to get 48 points out of 80 possible points to pass. This was 60% of the points available. Now that the passing score is 70 does this mean you have "raised the bar"?
A. Not at all. Under the old format prior to October 2000, the raw passing score for the civil engineering exam was always 48 raw points, and this passing score was always reported as a converted score of 70. In the old format candidates could pick and choose the questions they worked. Many candidates worked a unique set of questions. Under this system there was no way to adjust the passing score from 48 to account for variations in the difficulty of the exam. In October 2000, the civil engineering exam changed to a no-choice format. With this format all candidates work exactly the same exam and it will now be possible to use a statistical analysis to determine if any given exam is more difficult or less difficult than previous exams. The information is used to adjust the raw passing score. This means that an examinee's chances of passing the exam remain constant over time and do not depend on the difficulty of the specific exam that was taken. Therefore the new system is fairer to examinees.