A training fund is established under the control of the department. The director shall provide training to all new officers or employees of the department free of charge. The department shall also offer in-service training which shall include classes for officers and employees in the areas of safety, first aid, emergency preparedness, and any other appropriate class determined by the director. Employees of a judicial district may also attend any in-service training offered by the department. The department may recover from the correctional institution or judicial district the actual costs of planning and conducting the training classes if an employee of the institution or judicial district attends an in-service training class. The costs that may be recovered by the department include the costs of course development, training materials, equipment and facility rental, instruction, and administration. Moneys received as reimbursement of the costs shall be deposited in the training fund for use in conducting future training classes. All cost reimbursement moneys, grants, or appropriations related to training shall be deposited in the fund. Notwithstanding section 8.33, moneys remaining in the training fund at the end of a fiscal year shall not revert to the general fund of the state. Notwithstanding section 12C.7, interest and earnings deposited in the training fund shall be credited to the training fund.