From 1935 on, "Tutsi", "Hutu" and "Twa" were indicated on identity cards. However, because of the existence of many wealthy Hutu who shared the financial (if not physical) stature of the Tutsi, the Belgians used an expedient method of classification based on the number of cattle a person owned. Anyone with ten or more cattle was considered a member of the Tutsi class. The Roman Catholic Church, the primary educators in the country, subscribed to and reinforced the differences between Hutu and Tutsi. They developed separate educational systems for each, although throughout the 1940s and 1950s the vast majority of students were Tutsi.