Gender: boy
The only name that came up for W. Solewicz was WIADYSLAW MICHAL SOLEWICZ. He was born outside of the age range for the high school. However, given the times and place I don't think we should rule him out just because his birthyear is one year off. Wiadyslaw was born on 15 Feb 1928 and he lived at Adolph-hitler-strasse 116 and Franzstrasse 100 flat 3.
I found FELICJA SOLEWICZ born 28 April 1897 and MOTEL SOLEWICZ born 5 May 1896 living at the same address. I couldn't find anymore information on the Solewicz family.