SHA-256 involves 64 rounds per block (512 bit input) and each block is broken into eight 32 bit words. The message schedule refers to the movement of the words through the algorithm.
Word A for round n becomes word B for round n+1 is part of the message schedule.
Word A for round n becomes word B for round n+1 is part of the message schedule.
So the data from the previous round just gets shifted? And what exact are Wt and Kt? From what I can gather, they are where you put the initialization values the NSA supplies.