This work examines the Israeli National Informatics-Computer Science (CS) Olympiad from the perspective of diversity. A conspicuous phenomena in this olympiad (as well as in other science olympiads) is that very few females participate in the national competition, and none has ever represented the country in any international competition. When examining this phenomenon more closely, but with a broader view, it seems that while the level of external diversity (which addresses characteristics such as gender and race) is quite low also with respect to additional aspects, it does increase with respect to internal traits (such as ways of thinking). Furthermore, alongside the low external diversity among the participants, there are many common features among those who influence students' participation in the competition. The paper outlines the background of the research, the research setting, and, as mentioned above, examines its findings from the perspective of diversity.