(Note that this story, blogged earlier, happened in Wales.)
Here is another story out of Wales, about a teacher whose pupils knew more than she did. It's the one under the headline "Unknown Knowns."
It helps if you realize that Leeds is an northern English industrial city, whereas north Wales has been sheep country since there were sheep. All the jokes that Coloradans tell about Wyoming ("Wyoming: Where men are men, and sheep are nervous") were probably told about north Wales in 4th-century P-Celtic dialects.