School #4 was a religious school in Lodz that taught girls; school #4b met in the afternoon. Most students were between 9 and 14 years old, meaning that they were born between 1927 and 1932.
School #4 was located at Ulica Brzezinska 41. The street name was changed to Sulzfelderstrasse when German occupation began in 1939. You can read more about Ulica Brzezinska at
http://www.lodz-ghetto.com/brzezinska_street.html,16.