Yes, they TEACH for 26 hours. But TEACHING isn't the only job they do. The teaching part is a result of hours and hours of prep work. You're the type of person i was talking about in one of my previous posts - one who tries to talk like you have a clue but you really don't and have no interest in learning about why they are striking.
I'm not a teacher and don't claim to know everything about there job so correct me if I'm wrong...
Once you have 1 years plan for a certain curriculum, that will last you a couple of years before you need to slightly tweak it to coincide with the next couple of years curriculum thus your first year my be manic planning all these lessons but after that it must get easier, no?
Reverting back to a "26 hour" week (so to speak, not in the literal sense).