Chalk by Paul Cornell
Andrew Waggoner has always hung around with the losers in his school, desperately hoping each day that the school bullies — led by Drake — will pass by him in search of other prey. But one day they force him into the woods, and the bullying escalates into something more; something unforgivable; something unthinkable.
Broken, both physically and emotionally, something dies in Waggoner, and something else is born in its place.
In the hills of the West Country a chalk horse stands vigil over a site of ancient power, and there Waggoner finds in himself a reflection of rage and vengeance, a power and persona to topple those who would bring him low.
Paul Cornell plumbs the depths of magic and despair in this brutal exploration of bullying in Margaret Thatcher's England.