The school did act, the head teacher contacted the poor lads GP directly and he was prescribed nutritional tablets, an education welfare officer and the school nurse also visited his mother, but it seems schools have little influence over social services and the action was ineffective.
There seems to be a monthly catalogue of incidents leading up to his death, and its staggering that a liar could convince professionals that these were natural events, despite the emerging and consistently regular incidents.
A friend of mone was reported to social servoces by her ex partner, after weeks of upsetting interviews and assessments, they determined the report was indeed malicious intent by her ex partner (who is not even the childrens father), but even that does not appear to have happened here.