I wasn't sure whether to put this in history or education, but since it pertains to the interwar period, I decided on history.
I read in this article about "ghetto benches":
Roman Rybarski, a professor at Warsaw University refused to sign the registers of the students who stood during lectures in protest against the assignment of separate seats for Jews.
My question is, what is the significance of not signing the registers? I am in the US, and the terminology of "registers of the students" is not familiar to me. Is it something showing that they had attended class on a particular day, or for a particular semester?