Hon var en Hufflepuff pre-Pottermore (baserat på en fan-made quiz) och en Gryffindor genom Pottermore. Hon anser sig vara en Gryffindor.
År 2000, J.K. Rowling tog en slumpmässig fanatiserad sorteringsquiz som hon snubblade över och försökte förstå vad "internet" var. Hon fick Hufflepuff.
The Internet! Twice I've been on the internet. Friends of mine were telling me what's on there and I'd never gone looking before. First time, I thought I was never coming back, it's too scary. Some of the stuff that's out there is very weird. Second time I went in there someone had set up an unofficial fan site where you can be sorted, they have a Sorting Hat, and I was Hufflepuff. I wasn't that pleased! If anyone's meant to be Gryffindor, it's me.
Mzimba, Lizo. Transcript of interview with J.K. Rowling, BBC Newsround, Fall 2000
Eleven år senare gjorde hon sin egen quiz, så hon kunde få det hus hon ville ha.
Scholastic: We polled some of your fans and we asked them what question they most wanted you to answer. Close to 40,000 people voted and the question they selected with 40 percent of the vote: Which Pottermore House are you in?
J.K. Rowling: Well as I say, I know how it works. So I logged on, and I’m now on Pottermore as a regular user – that’s how I go check what’s going on – although I’m not going to give my user name. So I went through the Sorting, and I am a Gryffindor. But I had a moment as I clicked the answer to the last question – and bear in mind, I wrote the questions – I thought, “Hey, I’m not sure if I’ve answered to get Gryffindor.” I answered them completely honestly, and I knew that I’d answered a couple for different Houses so I thought, “I wonder how they’re going to work this out.” Yes, I am in Gryffindor.