ReZolve. The ZurViral Series, #3

In the middle of the apocalypse, school is still in session. Brock is at the helm of a group of survivors, and with the herd gone, things were supposed to be looking up.  Unfortunately, the survivors learn that hope has a price, and in their uncertainty they look to Brock to lead them once again. But he's out of plans and the dead are swarming. Facing a long, empty road that would surely mean starvation or worse, an unlikely ally comes forth with new information. A school on the edge of town has flourished, and their doors were always open. Caught between a rock and a dead place, Brock takes a chance on the school and leads his people into what may turn out to be yet another costly mistake.