Head of the Class

Teacher Caleb Hanson was abducted by alien hexapods before the System apocalypse even reached Earth, and has spent two years since teaching their children. When the aliens guarding his students are killed, Caleb becomes their only protector, and the opening novel of System Apocalypse: Liberty follows him weighing idealism against survival as monsters, bounty hunters, and hostile human factions close in on his makeshift classroom.