I am trying to configure a proxy for a school.  Mostly for unaccaptable
sites for children (pr0n etc).
I've pretty much settled on Junkbuster.  Maybe in conjunction w/ Squid. 
Not sure though.

I know I am going to use Junkbuster at least for the ad blocking.  Squid
would be nice for cacheing and the prebuilt blocklists that I found...

Anyone ever done this?  Is there a sight with prebuilt blocklists (I got
a few from squid but would also like some for Junkbuster.  Maybe some
generic ones as well)?

Any help would be appreciated.
sim