No results came up until I used the DM Soundex tool, when Bajla Sztyfelmacher came up. Her birthdate made her the right age to have attended School #23, so I thought that this could be the student that signed the album.
All the other Sztyfelmarchers in the database lived at the same address as Bajla. This includes her mother, Cywia (b. 1902), and her siblings Laja (b. 1924), Hersz (b. 1927), Fajwysz (b. 1931), and Moszek (b. 1935).
Bajla was the only one in her family deported on March 21, 1942, during the month of daily deportations to Chelmno. She was not the only one deported to Chelmno, however: Fajwysz and Moszek were deported on September 12, 1942, on which date there was also a Chelmno deportation. Cywia was deported on May 17, 1942, for which there is not any deportation listed, but the deportation number (20/2) is the same as Bajla's. Hersz died of currently unknown causes on May 5, 1942.