[DeltaBetaBaby]

In high school, I was a B'nai Brith Girl, which functions pretty similarly to a sorority for Jewish women. The counterpart for men is AZA, which indeed calls itself a fraternity.

ETA: Okay, according to the Wikipedia article, it is indeed a high school sorority. I can't find a good source on that, but we had open membership, so I'm not sure if it meets the strictest definition. It does, however, operate as local chapters under an international umbrella, and we claimed quite a few "famous BBG's."