BULATS is an adaptive evaluation system, one that can be suited to the language capacity of the candidate, whatever their current language level. Questions are posed by the computer through a series of screens and, as the test proceeds, the software selects the questions put to the candidate by means of immediate and continual analysis of their performance. As a result, the test becomes progressively simpler or more difficult, until a coherent and unambiguous level of language skills is determined. In this way, BULATS is able to establish the precise language level of the candidate and supply an immediate result. Clear instructions and on screen help supply all the support necessary to finish the test. In addition, the vast number of questions in the database ensures that the test never repeats itself and this makes each test unique. Furthermore, BULATS offers practice screens to allow the candidate to become familiar with this form of evaluation based on the use of the computer.