In September 1941 Hendrica Polak was enrolled in Grade 1 of the commercial school (day school) in The Hague. In October 1941 Hendrica Polak had to transfer to Grade 2 of the Joods Lyceum.
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.