I got a couple. I grew up in the woods so you could go anywhere, but usually it was "The Clearing". Everybody knew that was a clearing in the woods around the school. Out of site of everybody that would be interested in stopping the fight. Of course most had dozens of cheering kids watching. My friend grew up more in the farmland. For them it was "Meet you at the barn". Again there were hundreds of bard around there, but everybody knew it was the barn that belonged to one particular family (huge family mostly huge boys)