To be fair to the op Dune he may well be aware of the hygiene issues but if some other grubby little toe rag from a family of lowlifes introduces the nits into school then they will spread like wildfire. Just one of the downsides of compulsory unregulated education for the masses,including the gypo's, and pondlifes.
This of course is my christian view,one of compassion and goodwill,at this time of year.