Web Based Quiz Software w. "Leaders Board"

We're looking to have a fairly straight forward web based quiz that tallies scores so we can create a top score list that's visible to everyone. In a perfect world, it'd let me have one board for the current quiz and one for best average score etc.

I've been looking around for open source options but haven't found anything that lets me publicize the results easily/at all.

Anyone know any options or ways to use Moodle or some other LMS to do the same?

Thanks for any help/pointers,

Tom