As a regular teacher I didn't get it. Now retired and as a sub, I still don't. I got a list of students who were not to be marked absent from class. Periods one through three had a lot of absences. First hour was going to take me a long time to report which students to put on the absence list and get it sent to the office. I admit I assumed they need the first hour quickly. It was confusing, because some of the students on the list came to class first and some didn't. Also, the numbers didn't add up. I discovered there was new quiet kid in class. Yet I got it done asap and sent it down to the attendance with a reliable student. But I knew the next period was going to take much longer. Sure enough, 2nd hour also had a lot of absences. It was half way through the period when I decided to just report what I knew so far. I wrote on the slip that I didn't have time, but felt at this point (half way through the period), that it was necessary to tell them who was absent asap. I also explained there were many absences and suggested that an alphabetized list of students would help. The list they gave me was alphabetized by first hour teacher, not by student and was several pages long. I got a call asking if I needed a list. I explained. They sent down the same list I already had! Between classes I talked to a neighboring teacher. She said it was awful, but when I said, at least she probably got it as an excel file so she could alphabetize it, she seemed lost in the conversation. I think recording of attendance is important, isn't it? I didn't get it before computers when I taught math and science for many years, and now as a retired sub, I still dont' get it. Third period had the most absences, but I now had two lists. While I worked from one, I had a student work from the other. He knew everyone in class, yet he spent a long time going through the list of students to see which not to put on the absence slip. He was pretty sharp, but he got it wrong. I sent the slip down and explained that the numbers weren't adding up right. 4th hour was slow so I had time to correct the 3rd hour attendance. I sent it down with the 4th hour attendance. I feel like taking attendance is practically all a sub usually has to do. Teachers don't expect much. So I feel guilty if I can't even do that right.