According to Article 5.H.2. Special Meetings
The principal may call special faculty meetings as needed. No formal agenda is required, but meetings are limited to a single topic. Meetings shall be thirty (30) minutes or less. Teachers shall not be required to attend more than three (3) special faculty meetings per semester, unless the principal and steward agree otherwise. Payroll errors made by the Department shall be corrected immediately by making a special payroll request upon an employee's notification. The Department shall process the requested correction within five (5) days after notification of such an error.

Please let us know if your Principal is violating the spirit of the contract.  Email irish@gftunion.com.