LOS ANGELES (KABC) -- With labor talks at a standstill and no new negotiations scheduled, Los Angeles Unified School District campuses are closed Tuesday, leaving more than 400,000 students without classes as service workers strike to demand improve wages and working conditions. But, according to the district, the PERB did direct its Office of General Counsel to expedite the processing of the district's underlying unfair practice charge against SEIU Local 99, which alleged that the union and its members were engaging in an unlawful three-day strike. news conference and picket lines at Banneker Career Transition Center, 14024 San Pedro St