The Los Angeles school board voted on Tuesday to ask state lawmakers for a moratorium on new charter schools in the area, as demanded by a union for more than 30,000 teachers in a six-day strike that ended last week. The 5-1 vote by the school board represented a dramatic shift for a panel on which at least half the members had previously supported charter schools, which are publicly funded but privately managed. Charter schools operate in most of the United States with teachers who often are not represented by a union.
