K-State has a "strike" policy when it comes to failed drug tests. Once you get X number of strikes you're out, and I believe that numbers is 3 at K-State. This is an institutional rule, other schools allow fewer strikes, other schools you can play on forever, it just depends.
Personally, if this is the case, I am tired of our goody-two-shoes act. Apparently we really just don't want to win that badly . . . on the flip side, another personnel management failure for Frank Martin. They are piling up like cord wood at this juncture.