My Substitute Teacher's Gone Batty(1996)
(The first book in the Vampire Cat series)
A novel by Louise Munro Foley
Tracey Wilson has just started a new school, and that's bad enough. But when she "adopts" Omar, a stray cat who can talk, Tracey's life is turned upside down. And, as if things could get any worse, Tracey is shocked to discover that Omar's real owner is a vampire! What else can go wrong?
Used availability for Louise Munro Foley's My Substitute Teacher's Gone Batty
June 1996 : USA Turtleback
June 1996 : USA Mass Market Paperback