I'm starting to get restless with one LOR writer. I know it is still pretty earlier in the cycle, but the professor will not respond to any of my emails. So that being said I have a few general questions to help me organize some of my thoughts....
Will schools not review your application until they get all 4 LORs?
LORs are there, so the adcoms can read them and get an idea of who you are. The more LORs you have, the better they will get to know you, and the more interested they may become to meet you during an interview. Many schools require you to have at least three LORs (two from professors and one from a dentist or a non-family member); whereas, other schools don't require any specific number of letters. You'll definitely benefit from having more than one LOR, but that doesn't mean they will discard your application if you don't have 3 LORs. They'll probably review it, but like I said, if they don't find anything interesting about you, they may not want to meet with you for an interview!
When do schools start officially looking at the applications?
Most schools receive the hard copy of your application by July 14th (if not earlier). Of course, this depends on how early you have submitted your application and how fast AADSAS has verified your GPA. Most schools will send you emails inviting you to fill out their secondary application sometime between early/late July. The actual screening process starts toward late July/early August for most schools (They will only consider you for interview when they receive your official DAT scores. So, the later you take the DAT, the later they'll get your scores, and they later they'll start reviewing your application. End result-->A later interview).
When do schools typically start sending out interview invitations?
If you're among the early applicants with a complete application (DAT Scores, LORs, etc.) and competitive stats, then you should expect to get interview invites around late Oct/Nov.
Thanks.