question about movie robes

[filmgeek20]

Does anyone know if the school robes worn in the movie actually had 
hoods?  Some of the official children's costume robes (from Warner 
Bros) don't have hoods on the back--just large collars.  Does anybody 
know what I'm talking about?  I don't actually remember seeing anyone 
from the movie with a hood on the back of their robes.  Please let me 
know your thoughts all! :)

Thanks,
Amy