Der Untertan

Drama. Directed by Wolfgang Staudte
-Year: 1951
-Year in film: 1900s    
-Country: East Germany
-Who in clothing: girls, boys ~ 5-14 ys,  sailor suits
-Who in clothing 2: historical uniforms
-Available on DVD: yes  
-I own: no
-Clothing occurence: low ?    
-Rating:  6/10 ?          
-Rating: ******
-Comment: At least some boys (different age) at school in different interesting sailor suits (short and long). One boy has his jacket opened, so his striped shirt can be seen (it's not a dickey). Short collars, 3 stripes. One or more boys with white collars bust mostly dark (blue).
Also at least one girl in a sailor dress outside (see clip). Also a spanking scene at school.

I don't know this complete movie, but I assume rather few sailor suit scenes of boys. Maybe there are also other interesting scenes, and maybe women in sailor dresses as well. Also other historical clothing and soldiers in uniforms.
I found this movie by coincidence (YouTube recommendation of Abenteuer 1900).

Famous novel by Heinrich Mann. Starring Werner Peters, Renate Fischer and Paul Esser. DEFA movie. English title: Man of Straw. Aka "The Underdog, "The Kaiser's Lackey" and "The Subject".

I have to check this movie completely. Rating 5-6 for now.