I thought about that too.
Not class rank as the number out of the class, but they may have confused the 22nd board with the EA board, which would mean rank.
I will openly admit I do not know if ROTC rank matters for EA, and I would assume it doesn't. Caveat: we all know what ASSUME means!
I do know that the AF canceled the JULY OCS board and was planning to have one in Jan. Rank here would be a factor.
People tend to believe there is only one type of board in any given month. This is not true. For January:
OCS
Scholarship
AFSC for Rated Officers
SFT (I believe they meet in Jan, maybe it is Feb)
EA (I believe they too are meeting in Jan/early Feb)
Wires can get easily crossed.
Someone new to the forums seeing that date can jump to the conclusion they are talking about the same board.
Rank needs to be defined by Nelson for them to get a true answer on how to navigate their next step.