Confidentiality of records. (a) The following records and papers of the board are confidential and are not public records: (i) applicants; Letters of inquiry and reference concerning (ii) inquiry forms; Completed applications and verification and (iii) Transcripts of educational institutions; (iv) Investigative and disciplinary matters dismissed without action; and (v) Files relating to complaints and investigations until a formal hearing is concluded or until final disciplinary action is taken if no hearing is commenced. This paragraph does not prevent use of the board files in a hearing.