But who can say what's "good" to teach your kids?

Some kids are taught that girls who wear mini skirts are sluts. Is that "good"?

Or that it's okay to hurt animals.
Or that the world is 6000 years old.
Or that eating pork will kill you.
Or that wearing a condom is against's god's will.

Different religions all think that they are teaching their kids "good" values. But they can't all be right, can they?