Epstein-Szpeizer Gymnasiumone of a number of Jewish private schools in Vilna. This high school was distinguished by the fact that it was progressive, secular and that Polish was the language of instruction.
Long after the war the records of the school were found by a former student, Yulian Rafes, who collected many of them into a book. It gives a glimpse into the lives of a privileged class of Vilna students before the war.
Source: Rafes, The Way We Were Before Our Destruction.