All rules changes were reviewed and approved by the NFHS Board of Directors. In all, five rules changes were recommended by the National Federation of State High School Associations (NFHS) Volleyball Rules Committee at its annual meeting January 8-10. INDIANAPOLIS, IN (February 3, 2023)- The expansion of the coaching zone beyond the end line of the volleyball court and the allowance of one assistant coach to stand and communicate with players headline the new 2023-24 high school volleyball rules changes.