Wednesday is day five of the teachers strike in McHenry High School District 156, where the teachers union and school district are at odds over new contract agreement.
Classes and other school activities remain canceled in the district.
Teachers union and school district representatives met Tuesday evening for negotiations, but did not reach a deal before the meeting ended at about 4 a.m. on Wednesday.
Salaries have been a key sticking point in negotiations.
The two sides plan to meet again Thursday night.