I am a teacher (primary) but I'm actually picking your brains from a parent viewpoint today as my dd is in secondary school. Her school seems to be having a spate of thefts - in dd's group of friends alone I think nearly all have had money stolen at least once, including dd, and one girl has had money taken three times (I know, she should learn!)
The children generally carry their bags around with them all the time. They have lockers in their form rooms which they can put them in at certain times. The most common times that they don't have their bags with them is at lunchtime in the canteen where dd tells me that everyone leaves their bags on the a trolley/heap outside the canteen - talking to another friend, it is the same at her son's school too so I wonder if this is fairly common practice.
The school's only visible response to these thefts has been to tell the children in assembly that they had been getting a lot of complaints from parents about the thefts so the children need to be more careful securing their money (I have given dd advice too about not leaving her purse unattended so whilst I appreciate this is good advice, from the school in the context, it seems to have more than a whiff of victim blaming to me - 'well if you hadn't left it there it wouldn't have been stolen').
Has anyone successfully addressed a spate of thefts in their school? If so, what strategies did you use?
From the top of my head I would suggest one cctv camera outside the canteen or lockers?
I did ask dd why everyone didn't just leave bags in their form rooms but she said they go straight from lessons to the canteen as the queues are massive and if she wants any chance of getting to her lunchtime clubs in time (she does three per week) she just hasn't got time to go back.
So does anything work?