NPEA Schools
There were 42 schools and some were so late that I doubt that triangles were ever produced. Some of the schools were attached to a main school and did not exist independently, so it is questionable if they had a triangle. Four of the schools were for females and their triangle is white on black as opposed to the male triangle's gold on black.
It is interesting to note that in one of the NPEA films from before the war, pictures of the first school's students were shown with their arm triangle featured in a frame of the film, so we know that the first 10 to 15 did have individual triangles in the film.
The 1942 film: Kopf Hoch, Johannas! featured NPEA Oranienstein in the film and used its grounds, teachers, students and the dagger presentation in the film itself.
Ron Weinand