How long after job interview

Hi, I applied for a high school support assistant position and had an interview with a HR person and the other two. The interviewer asked for 1-2 referees to contact and if it was ok, they would talk to the principal. It has been a week since the interview and they haven't contacted my referees. What is the recruiting procedure at school? Do I fail and try another school or wait or contact the person? Thank you for advice.