Classes were canceled Friday for more than 4,000 students in a suburban Chicago school district after teachers working without a contract since last June went on strike.
Classes have been canceled Friday for more than 4,000 students in the Proviso Township High School District after the teachers union voted to move forward with.
Classes were canceled Friday for the roughly 4,200 students at Proviso's three high schools after a final attempt Thursday to avert a strike was unsuccessful.