The Boyhood of Cain - Michael Amherst

From the book jacket - In the shadow of an ancient abbey nestled between rivers, Daniel is growing up. He is highly intelligent but little understood by his parents, and a secret passion burns inside him for love and recognition. When his father loses his job as the headmaster of the local school, his family stumbles into a rural life for which they are ill-prepared. Daniel’s sole solace is the arrival of Philip, a new boy at school, whom he worships with a confused intensity. Before long, both boys fall under the spell of a charismatic art teacher, setting Daniel on a perilous course that could lead to the betrayal of all he loves.