CHICAGO (CBS) — Mayor Rahm Emanuel says he’s happy—but not satisfied—with the latest test schools from the Chicago Public Schools.

As WBBM Newsradio Political Editor Craig Dellimore reports, preliminary numbers show Chicago’s elementary school test scores hit a record high – but just barely – since Mayor Emanuel took office. But of the schools had voluntarily adopted a longer school day last school year, about half did better than average, and half lagged.

The mayor wants all the schools to score as high as Fiske Elementary, 6145 S. Ingleside Ave.

“I want to know, how did Fiske get 11.8 percent growth? How did it outperform the six schools in its area? How did Fiske get 11.8 when we were seeing .9 growth?” Mayor Emanuel said.

The mayor spoke on the city’s North Side, where he was announcing that the Chicago Public Libraries will add back hours, and will open for full days on Mondays again this fall.

LISTEN: WBBM Newsradio Political Editor reports

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