AFAIK this hasn't been taught since the 40s. Now (since the late 60s) there are 3 different cursive scripts available, and it's up to the school to decide which one to teach (if any).
When I went to school, the one I learned was Schulausgangsschrift https://commons.wikimedia.org/wiki/File:Schulausgangsschrift...
To me, the Sütterlin sample on Wikipedia is completely incomprehensible.