I applied and was asked to come to one of three group interview times through an e-mail. I was asked to bring a lesson plan, and was informed it would be similar to an audition, where we demonstrate a portion of a lesson we would teach students.
My group interview had about 20 people, and it was very fun because we played games and watched other people's teaching styles. It was a bit nerve wracking, but the Director informed us that a good portion of people interviewed would be selected to work for the company so that was reassuring.