I am new to the Jewish Gen groups, and genealogy in general. I came across your request as I was doing online research for a family history I am writing. My father, Herbert Stein, was in the "Religionsschule der jüdischen Gemeinde zu Berlin". He was born in Berlin in 1926, and attended the school between 1932 and 1936. I have a number of his 'report cards'. Unfortunately he seems to have missed your 1930-1931 years of interest. However, can I help you in any other way?
Also, do you have information about the school, pictures, etc., that you can share?
P.S. We lived in Brownsville East-New York for a number of years.