The board will conduct an investigation upon receiving a __________ complaint.

The board is required to conduct an investigation upon receiving a written complaint because written documentation provides a clear, detailed, and official account of the concerns raised. A written complaint helps ensure that the issues being reported are substantiated and creates a formal record for the board to reference during the investigation process. It also allows for a more structured approach in addressing the complaint, as the specifics can be analyzed and followed up on thoroughly.

While it is true that anonymous complaints, verbal complaints, and formal complaints may arise, these tend to have different implications. Anonymous complaints may lack sufficient detail for a proper investigation, while verbal complaints might not be documented adequately, making them harder to pursue. A formal complaint usually indicates adherence to specific protocols but still requires that it be in writing for the board to engage in an investigation effectively. Therefore, the requirement for a written complaint is fundamental for the board’s ability to address and act upon the concerns raised.