The head of the D.C. public school system says she is resigning.
Michelle Rhee made the announcement at a news conference Wednesday. She says the thought of not being chancellor anymore is "heartbreaking."
Rhee took over one of the worst urban school systems in the country in 2007 with a mandate from Mayor Adrian Fenty to improve them. Since then, she has arguably improved test scores but also angered many with teacher layoffs, firings and a brusque style.
Rhee's departure is not surprising since she campaigned for Fenty, who lost his re-election bid in a September primary.
Fenty says Rhee will resign at the end of the month. She will be replaced on an interim basis by Deputy Chancellor Kaya Henderson.