Remus Lupin: Out or In?

As a werewolf, that is. kestrelsan and I found we had differing opinions on this and so I wanted to hear what you thought.

I had just assumed that after Snape told the Slytherins in PoA, what the Slytherins knew, the school knew and what the school knew, the parents knew, and what the parents knew, everyone else knew as soon as they went down to the pub and so it was common knowledge in the UK WW.

But Kest thought the info wouldn't travel so easily and might be considered just a rumour, so that by OotP, most people still wouldn't know that Remus was a werewolf.

I think we'd both assumed our opinions were commonly held and were surprised that we were in such disagreement! So, Gentle Fangirl or Fanboy, what do you think?