My DS comes home from school dehydrated and poorly quite often. I send him with drinks but they won't let him drink them as I put squash in. He's only allowed the drink at lunchtime. He won't drink water when its all warm and frozen water doesn't defrost in time for break. I read on the nhs website that you shouldn't treat child dehydration with water but with squash or fruit juice. Does anyone else have any similar problems with their schools?