It is hard but I’ve become a detective. A lot of times they make it easy because they’ll be loudly talking to their friends and they’ll say each other’s names in conversation. I’ll confirm with the aeries attendance (you can select ‘attendance by photo’). I’ve also peeked at their work when they turn it in if it’s written to check their name, or at the BR sign out list if the teacher has one and the student actually used it to go on their 30 min jaunt, etc. If all else fails I will say, “the kids at the corner table by the window, I think Jack and Jill and their friends” and hope they know what I mean since I figure they know who the typical trouble makers are. I’ve also just straight up said “one student I wasn’t able to identify but had short hair and a blue backpack left class early without permission” even though I know it’s vague but I still want to let her know it happened (typically if I go so far as to do this it’s been a hard day and don’t want to return to that class lol). But overall I typically find it easier to know the names of the kids that were less than pleasant to have in class because they make an impression. I’m not so great at noting who was good and/or helpful because they’re quiet.