Los Angeles schools remained open Tuesday after the school district and the Service Employees International Union reached a last-minute tentative agreement, averting a planned strike that would have disrupted classes for hundreds of thousands of students.

The Los Angeles Unified School District reached an agreement in principle with the Service Employees International Union Local 99, which represents support staff in the district. The deal was finalized early Tuesday, allowing schools to operate normally.

The potential strike would have affected the nation's second-largest school district, impacting over 1,000 schools and nearly 400,000 students. The union represents various support staff positions within the district, including custodians, food service workers, and other essential personnel.

According to multiple sources, the agreement involved three unions that had been planning to walk out Tuesday morning. The strike would have forced school closures across the vast district, which serves communities throughout Los Angeles County.

The tentative deal comes after negotiations between district officials and union representatives. Specific details of the agreement were not immediately disclosed, as the deal remains subject to ratification by union members.

This marks the latest labor agreement reached in the district, helping to maintain stability in educational services for one of the country's largest student populations.