The board concluded that "staffing remains the No. 1 problem today."
But the board concluded in its report that the two-pilot rule was not clear.
"The board concluded that these technologies were not mature enough to provide new production capacity in the next 10 to 12 years," she said.
The board concluded in October that the union had a strong case but decided to defer its investigation until after the election.
If the board concludes that Delta interfered, it could order a new election.
Disney's board concluded it had to do more to pacify large investors.
The Board of Education studied the proposal in 1994 and concluded it needed further study.
"It would be irresponsible, if not impossible, to raise major funds under such circumstances," the board concluded in a letter to the society's 750 members.
"The board concluded that the Rivoli had been inactive for too long."
After four days of meetings, the board concluded that the legal, political and financial hurdles were insurmountable.