Is scholarship money received for room and board taxable when received as payment for being a resident advisor required to live in the dorms?

Yes.  Scholarship money is taxable income when used for room and board.  

Q. Is scholarship money received for room and board taxable when received as payment for being a resident advisor required to live in the dorms?

A.  Generally, yes, because room and board (R&B)are not qualified expenses for a scholarship to be tax free.   

But it depends on how the scholarship is reported to the student, on the 1098-T, on a W-2, or 1099-Misc or no document at all. Most importantly,  it depends on whether the scholarship is "restricted". That is it must be used for R&B.  A dorm advisor is most likely so restricted.