You'll notice that the words used in the article ('pray to Allah') are enclosed in quotation marks - a common journalistic trick to imply something that didn't actually take place. They weren't being force to pray to anyone. They were taking part in a lesson that demonstrated the way that Muslims pray. Whether the teacher did anything wrong or not is, at the moment, difficult to say as they've not yet made a statement of any sort but I'd rather wait and hear both sides of the story rather than rely on the Daily Mail and the BNP website for the definitive version.