Los Angeles school administrators are urging a union to resume talks as tens of thousands of teachers plan to walk picket lines for a third day.
Striking teachers vowed to take to the streets again on Wednesday despite a forecast for heavy rain across the US city.
There have been no plans for the two sides to re-start negotiations after talks broke down last week.
Schools remain open, staffed by substitutes, and the district says attendance is at about one-quarter the usual numbers.