Oh Dave... well done!
That took me back - been there, done that sort of moment.

When my son started high school he was at a private Anglican run co-ed
school.
I volunteered (as I had done at primary school - grades 1 through 7)
for tuckshop.
In the few weeks I was there I witnessed:
* out of date dairy and juice products being sold to the kids
* cakes, bread products (including those containing ham &
cheese), buns etc purchased by the school in bulk, used over a two
week period.
It was cheaper to buy in bulk, but the products were sold on
the basis of them being sold that day. The convenor of the tuckshop
thought she could save the
school and tuckshop money by buying in bulk, but holding food
over (refrigerated or not) for sale to students on another day.
* warming ovens stacked to the rafters - should hold around 30
items, these suckers had at least 50-60 items. None of which reached
optimum temp for
cooking and barely reached room temp before being vended to
students at morning tea!
* no fresh food being available - all pre-cooked, pre-packaged
fast food. Pies, sausage rolls, burgers, chicken & corn bars. Bung it
in a warming oven, microwave whatever... not a sandwich in sight.
* all 'hot' (mostly lukewarm by morning tea) food pulled out of
the ovens. Left on counters to vend to students. At end of morning
tea, everything went back into
their respective heating appliance (after being out for best
part of 40 minutes) to be re-heated (hopefully) and sold at lunchtime.