How long does it usually take for LSAC's report to get to the law school? Mine was sent almost two weeks ago but the school didn't get it yet... When should I start really worryig?

I would start worrying being in your shoes. My reports have been requested on Nov 15 and have been received the next day. Virginia Law School requested my reports. Maybe they are living next door. Anyway two weeks seem to be very long even taking into account that USA are a big country.

Best wishes