Hannah Packham from the National Union of Teachers spoke to us from outside Haemoor Primary School near Penzance where some staff are taking action over workloads. She says the situation is very rare.
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It'll be a frosty start to Tuesday morning with showers and hail later, but some sunny spells.
It's going to be a frosty start to Tuesday morning with showers and hail expected later in the day.
Bob Crampton is forecasting a bitterly cold spell on Tuesday - so don't put those wooly jumpers away just yet!