I actually already started because they were desperate for someone qualified to fill this position. Emailed HR person today- asked her when I should come in and finish filling out paperwork. She said she has been 'crazy busy' all week, and I might need to come next week. She also reassigned me a company email address (I worked for this organization before). I'm encouraged that this is all a good sign. Why would she have given me an email if I didn't pass? But maybe she just hasn't had time to look at results, or she hasn't gotten them back yet/. So I will continue to wait...