Into the Out — Stephen Goldin

Tamara Ruben and ten of her high school classmates are on a field trip in the California desert when they stumble across a long-dormant spaceship. Without warning, the ship takes off with them aboard, stranding them alone in interstellar space with no idea where they're going or what they must do when they get there. Now they must figure out the ship's workings to keep themselves alive... and Tamara realizes her mind is being taken over by a set of alien Voices that may or may not be trying to help her. Can the inexperienced teenage crew learn to cooperate to solve the unprecedented challenges they'll face on their historic journey?