<p><a href="http://us.rd.yahoo.com/dailynews/rss/education/*http%3A//news.yahoo.com/s/ap/20110408/ap_on_re_us/us_nyc_schools_chancellor"><img src="http://d.yimg.com/a/p/ap/20110407/capt.0d5f40a64dea40f6b282127e37907b1f-50994b05beb94c4eb2d6e5eac7220adc-0.jpg?x=98&amp;y=130&amp;q=85&amp;sig=V0tzEdL1l5Nc34HHsb9MGA--" height="130" width="98" alt="NYC school chief quits, a defeat to mayor's vision   (AP)" style="float: left; border: 0px;" />
</a>AP - Mayor Michael Bloomberg said Cathie Black was the perfect choice to head the city's 1.1 million-student school system because she was "a superstar manager."</p><br style="clear: both;" />