It is given at NMSU in October and December. Testing locations and dates can be found in the registration packet. It is advisable to take the June test so that you will have your scores when you decide where to apply. The June date will also allow plenty of time to retake the test if you are dissatisfied. Some consider the first, some the last, and some will average the two.
Many schools expect a point increase on the second test due to familiarity with the format.
Therefore, many schools look for a more dramatic increase. Remember that all scores will be reported to the schools, so consider the possibility that the score may be lower. Plan to take the test only once, but if you have reason to believe that the score is significantly below your potential, consider retaking it. Some factors that may merit a retaking are emotional problems, physical illness, uncomfortable setting or an unusually severe anxiety attack. If you honestly believe that the absence of one of these factors will increase your score, go for it.