A national standardized testing company can tell you your relative standing on an exam without divulging the mean or the standard deviation of the exam scores.

A national standardized testing company can report a student's percentile rank, which represents their relative standing compared to other test-takers, without sharing the mean or standard deviation of the exam scores. Percentile rank indicates the percentage of test-takers who scored lower than the individual, but it does not require knowledge of the overall shape or spread of the distribution.