School #4 was a school for girls in Lodz. The students in school #4a attended classes in the morning. Most students were between 7 and 12 years old, meaning that they were born between 1929 and 1934.
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.