The paper examines stability of Indexes of systems, which are used, at a country level, in order to develop technology. It is shown, based on statistical analyses of data from 1993 through 1997, that the set of variables, which form the model of National Technology System (NTS), is stable over the studied period of time. As well, stable are country membership in clusters, which characterize similar technology policies, factors that describe NTS, and finally NTS Indexes. The impact of these findings upon further studies is explored
