Class AA
No. 1 Harrisburg defeated No. 8 Aberdeen Central 3-0 (25-18, 25-16, 25-18
No. 5 O’Gorman defeated No. 4 Watertown 3-0 (25-16, 25-12, 25-22)
No. 2 Sioux Falls Jefferson defeated No. 10 Brandon Valley 3-0 (25-21, 25-21, 25-11)
No. 3 Sioux Falls Washington defeated No. 6 Sioux Falls Lincoln 3-1 (25-13, 25-14, 20-25, 25-18)

Class A
No. 1 Sioux Falls Christian defeated No. 8 Lennox 3-0 (25-21, 25-19, 25-15)
No. 5 Dell Rapids defeated No. 4 Platte-Geddes 3-1 (25-20, 20-25, 25-10, 25-14)
No. 2 Rapid City Christian defeated No. 7 Dakota Valley 3-2 (25-27, 25-22, 13-25, 25-14, 15-11)
No. 3 Miller defeated No. 6 Wagner 3-2 (25-23, 25-18, 11-25, 22-25, 15-12)

Class B
No. 1 Warner defeated No. 8 Gayville-Volin 3-0 (25-23, 25-9, 25-9)
No. 4 Burke defeated No. 5 Wolsey-Wessington 3-2 (19-25, 15-25, 25-15, 25-23, 15-11)
No. 2 Chester defeated No. 7 Faulkton Area 3-0 (25-15, 25-10, 25-14)
No. 6 Castlewood defeated No. 3 Colman-Egan 3-1 (25-21, 25-20, 24-26, 25-23)