Classic books for 11yr old

[HypodeemicNerdle]

Can anyone recommend some classic books for an 11yr old please.
My DD's teacher has suggested she expands her reading material but I'm not sure where to start, the only book he suggested was treasure island which DD has already read.
She's a huge hunger games fan and is mature enough to understand it. She's asked to read the twilight saga too but I've said no to that for now!
Any suggestions would be great, thanks

[AnyoneButAndre]

A Wizard of Earthsea is beautifully written. Frances Hardinge is both more age appropriate than Hunger Games and much better written.

[AnyoneButAndre]

And yes, Philip Pullman - not just Datk Materials.

[DontStopBelievin]

Came on to say Anne of Green Gables but see I have been beaten to it.
Loved that book.
Also:

What Katy Did
Little Women
Oliver Twist