Scott Lyons from the National Education Union says the plan is a reaction to underfunding in schools.
Norfolk County Council said it was only made aware of the plan as the school broke up for the Easter holidays.
It said it will be in contact with Buxton Primary School as soon schools return to discuss it in more detail.
"We are lucky to have neighbours who can pick up the kids at that time."
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Research finds that a great number of social enterprises, businesses with social or environmental goals which reinvest their profits, are trading more with consumers all year round, not just during the holidays.