What type of institution are these buses for?
Answer the question using just one word or a concise phrase.

school

What color is the bus?

yellow and green

Is this a green bus?

yes

What color is the bottom bus?

yellow

Is the bus double-decker?

yes

Who holds the copyright for this photo?

flicktone

What school district owns this bus?

castles

Is this a school bus?

no