The D.C. Council went ahead and formally approved Schools Chancellor Michelle Rhee’s new powers to fire non-union employees with a 2nd and final vote on the matter yesterday. The measure passed, as expected, by the same 10-3 margin as the preliminary vote in December.

“Are you going to see a mass exodus of 488 people? No,” Rhee told the Washington Post yesterday. “Will you quickly see people ineffective at their jobs move out? Yes.”

Just how “quickly” these firings will be handed down starting today remains to be seen, but any non-union employee who works in the DCPS Central Office is probably looking over their shoulder this morning.

UPDATE: See below the jump for the full memo Chancellor Rhee sent out to DCPS staff yesterday, thanks to a reader who forwarded it to us. Basically, Rhee is offering non-union central office employees and anyone who was hired later than 1980 a chance to be “reappointed” without tenure, which then makes them subject to a performance reviews “in the coming weeks.” If they do not accept reappointment, they must leave their positions.