Perhaps in a warm climate where diving is big business there are even enough OW/Adv. classes for a DMC to intern in 2 weeks to get enough experience. But I doubt one could do that PLUS the academics in that timeline.
PADI IDC INSTRUCTOR DEVLOPMENT COURSE- IDC Calendar
FloridaIDC:Divemaster April 7-13
Divemaster May 12-18
Divemaster September 7-14
Divemaster November 3-9
Scuba Instructor Training School PADI, teach Scuba PADI Scuba Instructor training, PADI Scuba Instructor Training School, Florida Scuba Instructor School
EaseDivePro:Divemaster / EANX Diver Dec 29 - Jan 4
Divemaster / EANX Diver Feb 24 - Mar 2
Divemaster / EANX Diver Mar 24-30
Divemaster / EANX Diver May 19-25
Divemaster / EANX Diver Jul 7-13
Divemaster / EANX Diver Aug 25-31
Divemaster / EANX Diver Sep 22-28
Divemaster / EANX Diver Nov 3-9
Divemaster / EANX Diver Dec 1-7
PADI IDC Center Florida Keys. Scuba Dive Instructor training at Rainbow Reef Professional Scuba Instructor Development and Career Center;scuba diving:diving, scuba, Key Largo, PADI, IDC, dive professional
KeysIDC is harder to copy/paste but their DM courses are;
1/3 - 1/12
2/3 - 2/9
3/11 - 3/16
4/1 - 4/6
5/5 - 5/11
6/10 - 6/15
7/1 - 7/6
IDC Schedule
Horizon Divers does DM for the 7 days prior to each Dive Theory Prep;
Oct. 7-13
Nov. 25 - Dec. 1
Jan. 6-12
Feb. 3-9
March 10-16
March 31 - April 6
May 5-11
June 9-15
June 30 - July 6
Aug. 10-17
Sept. 15-21
Nov. 24-30
Florida Keys Dive Center - Key Largo 2010 Scuba Diving Course Schedule
The Florida Keys Dive Center web site only shows the 2010 schedule, DM dates below;
1/7 - 12
2/4 - 9
3/12 - 17
4/9 - 14
5/7 - 12
6/11 - 16
7/9 - 14
8/19 - 24
10/10 - 13
11/28 - 12/1
Wow! Those last 2 are just 4 days
The above sites were due to my yahoo search of "Florida IDC" on the first search page. Below is the additional first page entry for "Florida Padi Pro training."
Pro Dive - 2009 Course Schedule
Again, just the '10 schedule, DM dates;
1/4 - 15
2/15 - 26
4/5 - 16
5/24 - 6/4
7/5 - 16
8/16 - 27
9/13 - 24
11/8 - 19
Now additional first page search entries for "Florida Keys IDC"
2011 PADI Instructor Course Dates Key Largo Florida
1/5 - 11
2/2 - 8
3/9 - 15
3/30 - 4/5
5/4 - 10
6/8 - 14
6/29 - 7/5
8/10 - 16
9/14 - 20
11/23 - 29
So just from 7 training centers in Florida (there are more just in Florida) there looks to be nearly 50 less than 2 week DM courses scheduled annually, and Keys IDC does not show Aug - Dec.
But I doubt one could do that PLUS the academics in that timeline.
You may doubt it could be done, but of my 9 person, 6 day DM class mates, only the Ivy league, pudgy blue blood with a Masters Degree failed.