This study used a series of simulations to answer questions about the efficacy of adaptive testing raised by empirical studies. The first study showed that for reasonable high entry points, parameters estimated from paper-and-pencil test protocols cross-validated remarkably well to groups actually tested at a computer terminal. This suggested that feasibility studies; i.e., running actual subjects, may not be called for. The second study showed that the proportion correct during flexilevel testing was a sensitive measure of student performance. It was also concluded that the modest time savings (12 to 15 percent) was due to the parameters used to implement flexilevel testing. Study III showed that a 50 percent savings in items, and, potentially, a large savings in test time could be realized through the implementation of alternative flexilevel strategies. In summary, the overall conclusion from the three studies was that flexilevel testing, with variable entry, offers an easily implemented testing procedure with potential for significant dollar savings at minimal risk. (Author/CTM)