A Prince's Trust study says more children are arriving for lessons hungry, dirty and struggling to concentrate.
In some cases ''scavenger'' pupils have been caught finishing scraps of food.
The findings are based on interviews with more than 500 secondary school teachers.
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The force has been charged under the Health and Safety Act and will appear before magistrates in May.
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The club's plans have provoked much criticism, with Amnesty International describing Myanmar as an 'odd choice' for a tour.