Up to $6 billion of BP's fines for the oil spill was supposed to be spent on ecosystem recovery. A behind-the-scenes drama unfolded when new guidelines added "economic recovery" to the approved purposes.
Tiffany Hardrick and Keith Sanders are accused of ending the school's contract with a bus company without board approval.
The school plans to add two more grades next year and boost enrollment from 181 to 240.
Former board president blamed for agreeing to a vague deal; current board says it won't try to get the money back.
More than twice as much of their income, according to the Institute on Taxation and Economic Policy.
The incident led to Gisele Schexnider being banned from the campus of the charter school.
The immediate aim is professional development, but the union also wants to lay the groundwork to organize the schools.