Former Chicago Board of Education Head - and current U.S. Secretary of Education - Arne Duncan arrived back in town yesterday. Early in the day he was in Wheeling inaugurating a state-of-the-art science lab. Later in the the afternoon Duncan took part in a panel hosted at University of Chicago about the implementation of Common Core. WBEZ’s education reporter Linda Lutton followed Duncan around yesterday, and she’s here to tell us what she observed. (Photo: Flickr/JoshuaMHoover)