DD has come home without her bag, so without all books, equipment, homework diary, lunchbox, etc.
It seems that some pupils/a pupil thinks it's a bit of a jolly jape to grab a bag and hide it somewhere in the school. This has apparently happened many times (others' bags too, this isn't targetted); so much so that teachers are getting very annoyed about it and constantly reading out announcements in tutor group.
Bags are not left unattended, as such. For instance, dd is doing drama and they had a lunchtime thing, so her bag, blazer and shoes were left in the corner of the drama studio along with everyone else's. No one saw anyone come in and take it. They may have been working in a different part of the drama suite, but it's quite dark in there.
I assume the bag will come to light and be waiting for her tomorrow.
What astonishes me is that this isn't primary school. 