I happen to have the books to hand at the moment so I'll jump in on this one This is BDM Obergauführerinnenschule II which was located in Karwe (near Neuruppin). By August 1937 it was one of two BDM Obergau leadership schools within Obergau 3 Berlin with the other being BDM Obergauführerinnenschule I (no suprise there then) which was located in Vogelsdorf near Strußberg. I don't know exactly when they were opened but they didn't exist in 1934 (the earliest list of the schools that I have). They do however appear on the 1937 list so the opening dates for the schools were clearly sometime between Jan 1934 and August 1937. I'll try and find more on the schools for the later period.