It would make sense to send the books and expect them to come ready to go. This would really help a shortened course.
I got my son OW certified earlier this year. The DS I dealt with (located in another city) offers several training programs tailored to provide maximum flexibility to their students:
1) traditional program based on X number of weeks;
2) concentration program split over two weekends; and
3) concentration program based on five consecutive full training days (conducted as a retreat and all water work done in a natural setting (lake)) This program is only offered in the summer.
I chose option 2 for my son. As soon as he was registered, he received all his course material including the PADI video. His homework prior the first weekend...go through the entire PADI OW book, complete the knowledge review exercises at the end of each chapter and go through the video.
First weekend (mid-March)
equipment requirement...mask, fin snorkel (LDS provide remainder)
Friday evening (1800 - 2300 hrs): review course material and pool work
Saturday (1000 - 1700hrs): review course material and pool work
Sunday (0900 - 1500 hrs): review course material, pool work, written exam
2nd weekend (I elected for a referral with a local instructor in early May instead but would have occurred last weekend of May)
OW sessions conducted at a third location where LDS provides dorm, cooking facilities, classrooms and compressor
Equipment requirement...as per first weekend except course membres pick up remainder of gear at LDS shop prior proceeding to diving/cabin facility
Friday night: arrival at location and setting up
Saturday/Sunday...quick review plus two OW certification dives on each day.
I personally thought it was very well done and in a very professionnal way. I also ensured that my son did his part prior the first weekend. I had a very good idea about the training establishment as I used it for my AOW certification (conducted over a weekend at their diving/dorm facilities).
I also think it is a very good way to conduct training as course members can build upon lessons learned that are still fresh to their memory.