I've seen it done both ways and breaking it up definately has it's advantages; however, alot of instructors (myslef included...assuming I get the job I'm trying to get:wink2
are teaching in a 141 environment (something I have no experience in, yet..) that requires you follow the syllabus, which typically follows the get it done in 2 1.5 flights approach.
Ah, another BIG misconception promoted by busy flight instructors more interested in their own experience/scheduling requirements.
Each FAA approved flight school program is individually approved and may vary quite a bit, provided they meet all Part 141 requirements.
Most schools use prepared programs already approved, such as Jeppesen, a well known pilot training and materials company.
The Jeppesen Private Pilot syllabus has .2 hood time scattered about in a few of the pre-solo lessons, and a few .3 or so scattered around in x/c and check ride prep.
Many 141 instructors think, or want you to think, (for scheduling convenience) that most of the training must be done in a specific 1, 2, 3 fashion, when it really is not that way.
Real flight training cannot occur in that rigid method. There must be a level of flexibility, and all 141 programs that I know of provide that flex. An instructor can vary the lessons as long as he stays within a stage.
Meaning, no x/c before solo, and like that. Each course (usually) is divided in 3 stages; pre-solo, x/c, checkride prep.
Other than that common sense lesson planning,
most 141 programs allow sufficient flex for most students and situations.
As I said, each school has it's own approved program, but be sure to read the program and not just follow what other instructors tell you .
A good 141 program allows as much flex as any 61.