Tensions grow after San Francisco schools set to close for 4th day as teachers' strike continues impacting 50,000 students - ABC7 San Francisco

Tensions grow after San Francisco schools set to close for 4th day as teachers' strike continues impacting 50,000 students    ABC7 San Francisco

Tensions grow after San Francisco schools set to close for 4th day as teachers' strike continues impacting 50,000 students  ABC7 San Francisco