The Calico Critters Shool Bus was exclusive to the USA line of Sylvanian Families and has never been released outside of the USA to my knowledge. 

Ride to the Calico Critters Country Tree School in this classic yellow toy vehicle with real rotating steering wheel and a door that opens and closes.

Vehicle can fit up to 7 Calico Critters, including parent, child and baby size figures.

Pull the lever next to the driver's seat to open the door and release the safety stop sign.
(Stickers have not been stuck yet, but are included)

This item is new and in its original box, but the box has been opened to take photos.