posted by Amy .
This is silly, really. What is the possessive form of class?
Is it "center of the class’s attention" or center of the class' attention"? I think it's the first one, but I don't know for sure.
Both forms have been used. I prefer the first one class's because that's the way we pronounce it.
You may either use class' or class's; however, whichever you choose do to, be consistent.
Then it would be Charles', grass', etc.