Lockdown — Raelyn Drake

After aliens attack Earth, Sanjay is trapped inside his high school. A local group puts the school on lockdown, claiming they're looking out for the students. But when the teachers start to mysteriously disappear and no one will give Sanjay and his friends any real answers, they begin worrying that the situation isn't as safe and secure as it seems. What's really going on? Perfect for survival-story enthusiasts, this Attack on Earth novel is packed full of action and drama sure to make even the most reluctant readers fiercely turn the pages.