In September 1941 Elie Keijl was enrolled in Grade 4b of the 7th municipal commercial secondary school in The Hague.
Data on Jewish students at schools in The Hague.The records of the Joods Lyceum in The Hague contain Lists of students at schools in The Hague, including a list of students at the Joods Lyceum. These records are kept at the municipal archive in The Hague.