Striking Chicago public school teachers picket outside Roberto Clemente High School on September 17, 2012 in Chicago, Ill. - 

Late this afternoon Chicago time, the teacher's union there decided to suspend the strike that's kept 350,000 kids out of school the past seven days. 17.6 percent is the average pay raise over the next four years.

In return, the city gets tougher teacher evaluations based in part on student test scores.

Follow Kai Ryssdal at @kairyssdal