Any primary school teacher who claims that they have hours of marking is at best fibbing, and at worst failing.
I see. Because 30 x pieces of writing, at least twice a week, 30 pieces of Maths, 5 times a week, 30 x Science work, 30 x tables tests, 30 x History/Geography/RE per week all fit very neatly into the slot between 3.30 and 5pm, which may or may not be already earmarked for one weekly staff meeting, at least one meeting with a parent, one governors' meeting, phone calls with outside agencies/to arrange trips, etc, etc, etc, etc, etc.
Yes. My mistake. 
You haven't the slightest clue what you're talking about, you smug idiot.
Please tell me your occupation, so I can explain to you how you aren't doing it properly and how to organise your time more efficiently? It would be about as relevant to this discussion as your ludicrous comments.