Tens of thousands of Los Angeles public school teachers have spent the school week outside of the classroom and on the picket lines.

The more than 30,000 educators on strike are demanding smaller class sizes, increased staffing and higher teacher salaries. Many Los Angeles classrooms have more than 40 students to a single teacher. The current cap for high school class sizes in L.A. is 46.

With reduced staff in the Los Angeles Unified School District during the strike, many parents have kept their children home from school this week. Those parents who could not afford to take time off have been forced to send their kids to sit in school gymnasiums and watch movies or do busy work with substitute teachers.

As of Thursday, a standoff remained between the United Teachers of Los Angeles, the teachers’ union, and the Los Angeles Unified School District.