The Chicago Teachers Union filed a ten-day strike notice this afternoon, meaning a walkout could take place as soon as September 8. The majority of Chicago Public Schools begin class September 4.

There were recent indications that Chicago teachers are headed for their first strike since 1987. However, the notice does not necessarily mean a walkout. It could place pressure on both CPS and CTU to reach agreement on key issues such as teacher's salaries and rules about class size.