In an escalation of labor pressure, hundreds of teachers boycotted district-organized Professional Development (PD) sessions, instead attending a mass, Oakland Education Association (OEA) rally this week at Lake Merritt to demand the Oakland Unified School District begin bargaining “in good faith” for a new union contract. | By Ken Epstein In an escalation of labor pressure, hundreds of teachers boycotted district-organized Professional Development (PD) sessions, instead attending a mass, Oakland Education Association (OEA) rally this week at Lake Merritt to demand the Oakland Unified School District begin bargaining “in good faith” for a new union contract. The rally Wednesday afternoon