There's an Alien in My Classroom!(1999)
(The first book in the My Alien Classmate series)
A novel by Bruce Coville
Pleskit's new in school. His dad's the galactic Ambassador and he's decided Pleskit should go to the local school. It's only his first day and so far he's managed to freak out his new friends, confuse his classmates, and terrify his teacher. What on Earth will he do next?
Used availability for Bruce Coville's There's an Alien in My Classroom!
May 2000 : UK Paperback
June 1999 : UK Paperback