When two different forms of a particular test are given to different groups of candidates, it is often necessary to make the test results for the two tests or groups as comparable as possible; the statistical process used for this purpose is termed equating. Two different methods of equating Graduate Record Examinations (GRE) Advanced Tests were compared. One method used data from a group of items that were common to both tests, while the other method used data from the GRE verbal aptitude test and quantitative aptitude test, also taken by both groups of candidates. The results of 158 equatings for the 17 GRE Advanced Tests were tabulated and presented graphically. Out of the 17 different test series, nine different series had equating differences at one end or the other of the score distribution equal to about one half a standard deviation, and about three percent of the 158 equatings had differences of over one standard deviation. (Author/CTM)