With the Chicago Teachers Union strike over, classes resumed this morning for about 350,000 CPS students. Class is also in session at Lake Forest High School, where the school board and teachers reached a four-year tentative contract at 3 a.m. today ending a weeklong walkout. The school board and union must still ratify the deal.

Unlike CPS, the Lake County school district attempted to have school without teachers, offering classes taught by administrators, substitutes, and volunteers. However, the Illinois Board of Education indicated that these classes did not meet what is required of a legal school day.

About 1,700 students attend Lake Forest High School.