The widespread application of personal computers to educational and psychological testing has substantially increased the number of test administration methodologies available to testing programs. Many of these mediums are referred to by their acronyms, such as CAT, CBT, CCT, and LOFT. The similarities between the acronyms and the methods themselves can be a source of confusion to testing professionals. This purpose of this paper is to suggest a hierarchical classification system for test administration methods and clarify what each entails while also briefly discussing the similarities and differences of each. (Contains 1 figure.)