In October 1941 Kaatje Hes was enrolled in the Joods Lyceum in Den Bosch.
Data on Jewish students at schools in Den Bosch and data on students at the Jewish Lyceum [secondary schools that the Nazis forced Jewish students to attend] in Den Bosch.Lists of students at schools in Den Bosch are kept in the municipal archive in Den Bosch.
A memorial in Zaltbommel commemorates the Jewish victims of this town. More information on this memorial can be found (in Dutch) on the website of the Nationaal Comité 4 en 5 mei.