Believe it or not, organized 'fight clubs' were a real thing about 8 to 10 yrs ago, in a neighborhood very much like the one in this case.
We lived in a very similar school district, very safe, upper middle to high income area , which we sought out purposely. Turns out, lots of these 'entitled' kids had way too much time and money on their hands. lol
My 14 yr old daughter was supposedly doing homework after school with her best friend every Thursday. :doh: One day I got a call from the sheriff, to come pick her up at the house across the street from her 'homework buddy.'
Turns out the 2 boys that lived there had a very organized after school Fight Club. When it finally became too big, neighbors noticed and called the cops. I was shocked. It never occurred to me that was what she was really doing every Thursday. :blush: