Bias is when someone might not act fairly towards you. If you know that a board member might be biased, your parents or guardians should contact the board’s chairperson as soon as possible. Let them know and suggest that the board member shouldn’t be part of the meeting (and the board’s decision).
This is part of your right to a fair hearing.
For example, there could be bias if someone on the board is related to another person who was involved in the incident.