William McGurn:

Donald Trump is not the only one who knows how to get attention with the words, “You’re fired.” Michelle Rhee, chancellor for the District of Columbia schools, has just done a pretty nifty job of it herself.
On Friday, Ms. Rhee fired 241 teachers–roughly 6% of the total–mostly for scoring too low on a teacher evaluation that measures their performance against student achievement. Another 737 teachers and other school-based staff were put on notice that they had been rated “minimally effective.” Unless these people improve, they too face the boot.
The mass dismissals follow a landmark agreement Ms. Rhee negotiated with the Washington Teachers Union (WTU) at the end of June. The quid pro quo was this: Good teachers would get more money (including a 21.6% pay increase through 2012 and opportunities for merit pay). In exchange, bad teachers could be shown the door.
At the time, many gave the teachers union credit for approving this deal. Here’s how another New York-based newspaper described the contract: