Board member said it was an oversight; school leader said agenda matters weren't urgent.
Though teachers soundly defeated union, paraprofessionals approved and could push for contract.
New tack comes just six weeks before current chief steps down.
Continuing union questions, legal budget discussed amid heated atmosphere.
It will be the second union election at a charter school in two weeks.
The tally: 54 votes by teachers for the union, 77 against.
We'll be outside, but won't live-blog it.
Board received applications from 22 people who were deemed qualified.
Elections will be held at both campuses on May 17.