They cited long-stalled negotiations with the school district over wages and benefits as a major impetus for the walkout.

Schools closed as teachers in San Francisco began a strike Monday after struggling to come to an agreement with the district on pay and health care.

They cited long-stalled negotiations with the school district over wages and benefits as a major impetus for the walkout.

They cited long stalled negotiations with the school district over wages and benefits as a major impetus for the walkout.