User Comments:
According to approver notes I found on the site, Kamienna is a street in Lodz outside the ghetto, indicating that Kamienna 15 was likely the subject's pre-war address before moving to the ghetto.
Match on the name is also not 100% due to only first initial being supplied from student list, but Mendel Benjami Kron is the only registered Jewish child in Lodz ghetto whose birthday fits the age range of the school.