Question on Brushes

Hoi!
I'm new here..so I was just wondering if I use any of the brushes I dl/find on this site could it be copyrighted in anyway? Cause, I was thinking about using these brushes on my school project and maybe using them to make my school annual...I was wondering if anyone would/might not want this to happen. If someone could reply me, I'd be very grateful! Also, if possible if someone could give me the procedures, if there are any, to have the brushes be used on a school project! Thanks
-Sapphi

The ones that are posted with links to download them feel free to use. :)

EDIT: You might want to give credit on a non-visible layer. I'd say it's all up to the individual designer.

When it comes to brushes, they are always copyrighted, but you are free to use them up until you rip them to make another brush set, then it's illegal.