There shall be no discovery allowed in the proceedings under this chapter. The record for hearing shall include:

(1) The entire office of professional standards investigation file for the conduct at issue before the board, the entire personnel record for the accused employee, including any training records and the employee's work history;

(2) Previous office of professional standards' investigations and files for the accused employee, when appropriate; and

(3) Any other information considered by the appointing authority in determining the discipline to be imposed.