this talk presents joint work with nicholas loehr, jeffrey remmel, and bruce sagan. the m-level rook placements are a generalization of ordinary rook placements. by factoring the m-level rook polynomials of ferrers boards, it is possible to partition them into equivalence classes. there is a p,q-analogue of the m-level rook numbers. we have a bijective proof that two boards with the same m-level rook numbers have the same q-analogues of their m-level rook numbers. surprisingly, they may not have the same p-analogues.