I'm trying to find the title of a book probably release in the late 90's/early 00s.
Basically this is the gist of the story:
A bunch of humans are living in a colony in space. All the kids go to school inside the colony spaceship to be taught by the ship's AI. One day, while in class, the spaceship goes into lockdown, and we learn afterwards that some aliens (native to the planet) woke up and ate pretty much everything, including all the parents.
What happens next is a lord of the flies in space kind of thing, where the kids break into a couple factions and fight each other. Eventually some survey ship full of adults come to the planet but I can't remember much else, save remarkably random details.
Anyone have any idea what this book could have been called? It's a young adult science fiction book, probably popular right around the same time as the star wars galaxy of fear books. It's probably 125-175 pages in length.