District had promised not to retaliate against employees protesting school closures By Ken Epstein The Oakland teachers’ union has accused the Oakland Unified School District of retaliating against teacher activists, including firing two substitute teachers, who have protested school closings. The union is planning litigation against the district. “The Oakland Education Association (OEA) demands an | District had promised not to retaliate against employees protesting school closures By Ken Epstein The Oakland teachers’ union has accused the Oakland Unified School District of retaliating against teacher activists, including firing two substitute teachers, who have protested school closings. The union is planning litigation against the district. “The Oakland Education Association (OEA) demands an