Gender: boy
I ran a search for Scharf, K* and was able to find a boy named Karl Scharf. Isearched his age (15 yrs old) which matches with the age range in his school, the Gymnasium and high school for boys. Under the notes it says he was transported to Chelmo on May 15, 1942 which was last day people were deported from Lodz to Chelmo according to the transport timeline, therefore he may have been on those transports.
Karl's occupation was listed as Haushalt. After a preliminary search, I found that Haushalt means houshold in German. This leads me to believe he may have worked as a "help" of sorts.