Acceptance/ rejection letters for BFA programs?

Hello! Does anyone know how schools typically send out there acceptance/ rejection letters? Do they usually send them all out at the same time, send out acceptance first, hold on to kids on the waiting list? I was just curious because I auditioned for BFA acting and about 3 weeks ago the woman at the front desk said that she would be sending out letters that day and I haven't received anything yet. It has been a nerve racking 3 weeks and I’m just looking for answers anywhere I can get them. I am worried that mine got lost in the mail and I can't really contact anyone because its christmas break. Blah.

I know its just that I contacted the woman at the front desk 3 weeks ago and she said she was sending them out that very day so that’s why I’m curious about if they typically send out acceptance first and wait 3 weeks to send rejection? Or if they sent both and mine could have gotten lost on the mail? Or maybe they sent out both and I could be on some sort of waiting list. I’m just trying to figure out how schools usually do their letters because I’m driving myself crazy with worry because I think if I haven’t gotten one by now that its probably a no.

Some schools also send out acceptances alphabetically in groups.