Realprogymnasium
As a Realprogymnasium in Prussia, according to the ordinance of March 31, 1882, Realgymnasien without Prima (top school class before the Abitur) were designated. Previously, these were the higher civic schools .
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- Brockhaus' Kleines Konversations-Lexikon, fifth edition, volume 2. Leipzig 1911., p. 498 online