Experiments in education are not uncommon, never have been. That's what you'd call big business.
Lets admit it.
Whenever a new theory is introduced, alterations to education are made all the way from the White House and Congress to the janitor who has to clean the room. It means money. Your arguement is correct. The key is in the approach and interest of all parties involved,not the length of the period. I went from one school district that still has block scheduling to a school district with a traditional length period.