My Teacher Is An Alien

Sixth grade is just out of this world!
Susan Simmons can tell that her new substitute teacher is really weird. But she doesn't know how weird until she catches him peeling off his face , and realizes that Mr. Smith is really an alien!
At first no one will believe her except Peter Thompson, the class brain. When Peter and Susan discover Mr. Smith's horrible plans for their classmates, they know they have to act fast. Only they can get rid of their extraterrestrial visitor , and save the rest of the sixth-grade class from a fate worse than math tests!
After Susan sees Mr. Smith the substitute teacher peel off his face, she knows he's an alien and only Peter believes her. Together they work to save the class from Mr. Smith's horrible plans.