ADMINISTRATIVE LAW - RIGHT TO INFORMATION - REFUSAL OF ACCESS - CONTRARY TO PUBLIC INTEREST INFORMATION - complainant’s information - student witness statements - third party personal information - personal information and privacy - prejudice agency’s ability to obtain confidential information - administration of justice and procedural fairness - whether disclosure would on balance be contrary to the public interest - sections 47(3)(b) and 49 of the Right to Information Act 2009 (Qld)