School's Out Forever — Scott K. Andrews

"After the world died we all sort of drifted back to school. After all, where else was there for us to go?"

Lee Keegan's fifteen. If most of the population of the world hadn't just died choking on their own blood, he might be worrying about acne, body odour and girls. As it is, he and the young Matron of his boarding school, Jane Crowther, have to try and protect their charges from cannibalistic gangs, religious fanatics, a bullying prefect experimenting with crucifixion and even the surviving might of the US Army.

Welcome to St. Mark's School for Boys and Girls...