This happens where I am. I went when new to the school, but not any more. All staff (teaching & support) were expected to attend on these days until a couple of years ago, which was hated by most, but it is now voluntary and has taken on a less formal 'just wander' style and nicer air (apparently). We non-attenders don't get the Brownie points though, while those wanting promotion etc. attend to get theirs (and a big 'thank-you' from the head)!!!