"Now, dueling is no longer a part of the OWL exam – more’s the pity, in my opinion – but it is an unparalleled tool for ensuring you’ve not just understood the Defence material, but you know how to apply it. For the next month, we’ll be dueling every Friday. Here is what you need to know," Merrythought said. The entire class hung on to every word, the air quivering with their excitement.