For future reference. I attended the Urban Schooling interview and they let us know that they receive about 75 applications (more this year), 25 get interview invites and 15 get admitted.
It was group interviews of about 4-5 students and 1-2 professors with 4 rounds- each 30 minutes. The actual interview rounds were not structured- depending on the professor they could have prepared questions, or the professor could simply sit back and ask the students to ask any questions they had. It was not an intense day of interviews but rather a time for the professors and applicants to get to know each other.
Some people met with professors the next day but that depended on whether you were contacted by a professor to set something up. Otherwise you only needed to attend the one day of interviews.