BYHANNAHNATANSONINCHAPIN,s.C.Asgoldsunlightfilteredintoherkitchen,englishteacherMaryWoodshoul-deredawornleatherbagpackedwithfirst-day-of-schoolitems:Threelesson-planningnote-books.Twopeanutbuttergrano-labars.Anextrapairofsocks,justincase.everythingwasready,butWooddidn’tleave.Forthefirsttimesinceshestartedteaching14yearsago,shewasscaredtogobacktoschool.sixmonthsearlier,twoofWood’sAdvancedPlacementenglishLanguageandComposi-tion(APLang)studentshadreportedhertotheschoolboardforteachingaboutrace.Woodhadassignedherall-WhiteclassreadingsfromTa-NehisiCoates’s“BetweentheWorldandMe,”abookthatdissectswhatitmeanstobeBlackinAmerica.Thestudentswroteinemailsthatthe...