MICHEL MARTIN, HOST:
This is TELL ME MORE, from NPR News. I'm Michel Martin. Coming up, Apple is expected to release its latest iPhone this week, but we have a guest to tell you why you want to take a close look at that - or any other new contract, for that matter - before you sign on the dotted line. That's coming up.
But, first, we turn to Chicago, where hundreds of thousands of students are out of class. That's because the nation's third-largest school district has been shut down by a teachers' strike.