The HiSET is an alternative to the GED test and the TASC test. In some states, it is the only acceptable test for earning a high school equivalency diploma. In other states, it is just 1 test option out of 2 or 3.To find out whether your state will be using the HiSET for high school equivalency tests, visit hiset.ets.org or contact your state's department of education. The previous edition of this book was titled .