(1) Evidence, including hearsay evidence, is admissible in student conduct proceedings if, in the judgment of the conduct officer or presiding officer, it is the kind of evidence that reasonably prudent persons are accustomed to rely on in the conduct of their affairs. The conduct officer or presiding officer determines the admissibility and relevance of all information and evidence. The sexual history of a complainant is not admissible in a student conduct proceeding except to the extent permitted by evidence rule 412 and RCW 34.05.452 (stating that presiding officers must refer to the Washington rules of evidence as guidelines for evidentiary rulings).

(2) Students may choose to remain silent during conduct proceedings, recognizing that they give up the opportunity to explain their version of events and that the decision is made based on the information presented at the hearing. No student must be compelled to give self-incriminating evidence, and no negative inference will be drawn from a student's refusal to participate in any stage of the conduct proceeding. If either party does not attend or participate in a hearing, the conduct officer or conduct board may resolve the matter based on the information available at the time of the hearing.