On Thursday, after months of negotiations, tens of thousands of Chicago teachers stepped away from the classroom to strike on behalf of what the city’s schools CEO, Janice Jackson, calls a “social justice bargaining” agenda. She used the phrase sneeringly, but what was there to sneer at? In addition to the standard suite of educator demands—pay raises, a reduction in class sizes, more social workers and nurses—the Chicago Teachers Union is calling on the city to increase funding for affordable housing, hire staff to help homeless students, and expand community schools that offer “wraparound” services for students.