Morning Wrap 9/17/12

Teachers union targets three SFUSD board incumbents for defeat, 49ers go to the head of the class, San Jose grapples with its crime surge, more.

• The 49ers turn back Detroit and take a step toward early season NFL preeminence. Chronicle; the Raiders get wiped out in the second half against Miami, slip to 0-2. Mercury News
• Payback time: San Francisco’s teachers union is going after three incumbents in the upcoming board of education election. Chronicle
• San Jose elected officials and police have scheduled separate meetings Tuesday to discuss what to do about the city’s growing crime problem. Mercury News
• After its big win over USC, Stanford jumps into the AP Top 10. Chronicle
• An explosion on a BART train temporarily closed the Civic Center station Sunday afternoon, and snarled schedules throughout the system. Chronicle