Would be good. The existing system is a bit strange.
I totally believe it is because the schools are too big here where I live...smaller schools can totally make the schedule work where everyone in the school has reading and math at the same time and the see which kids need history/science at a higher level and figure those scheduling situations out on an individual basis. I believe writing/language arts is a class that a good teacher can teach with a varity of levels and easily differentiate.
It is different when you need to schedule 300-400 students k-5 to my son's school of over 1000
