Sammy will wake up on Christmas morning with little hope of a visit from Santa. He didn’t get a present last Christmas and it is unlikely he will get one this year, because his mother struggles just to put food on the table. But it is not all gloom for the lively eight-year-old. Next Monday, 23 December, his school will reopen and the teachers and support staff will return, unpaid, to organise a huge “Christmas Eve Eve” party for the…