The South Dakota Prep Media football poll for the week of Sept. 23 is listed below, ranking the top-five teams in each class, record, total points and previous ranking. First-place votes received are indicated in parentheses.   Class 11AAA 1. Harrisburg (13) 4-0 92 1 2. Lincoln (7) 4-0 85 2 3. Brandon Valley 4-0 63 3 4. Jefferson 3-1 40 4 5. O’Gorman 1-3 19 5 Receiving votes: Washington 1.   Class 11AA 1. Watertown (19) 3-1 99 1 2. Brookings (1) 4-0 81 5 3. Pierre 2-2 39 2 4. Yankton 2-2 29 4 5. Spearfish 3-1 26 3 Receiving votes: Tea Area 25, Aberdeen Central 1.   Class 11A 1. SF Christian (20) 4-0 100 1 2. Lennox 3-1 66 3 3. Canton 3-1 53 2 4. Dakota Valley 3-1 49 4 5. Dell Rapids 3-1 30 5 Receiving votes: Tri-Valley 2.   Class 11B 1. Winner (19) 4-0 99 1 2. Sioux Valley (1) 4-0 75 2 3. Elk Point-Jefferson 3-1 64 3 4. Woonsocket/Wessington Springs/Sanborn Central 3-1 35 4 5. Mount Vernon/Plankinton 3-1 27 5   Class 9AA 1. Parkston (17) 4-0 96 1 2. Hamlin (3) 5-0 81 2 3. Elkton-Lake Benton 5-0 61 3 4. Viborg-Hurley 3-1 37 4 5. Tripp-Delmont/Armour/Andes Central/Dakota Christian 4-0 17 5 Receiving votes: Hill City 3, Kimball/White Lake 3, Leola/Frederick Area 2.   Class 9A 1. Howard (19) 5-0 99 1 2. Wall (1) 4-0 72 2 3. Warner 4-0 62 3 4. Wolsey-Wessington 4-0 44 4 5. Harding County/Bison 4-1 22 5 Receiving votes: Philip 1.   Class 9B 1. Avon (19) 5-0 99 1 2. Dell Rapids St. Mary (1) 5-0 77 2 3. Sully Buttes 4-0 63 3 4. Faulkton Area 2-2 24 4 5. Canistota 3-2 14 5 Receiving votes: Corsica-Stickney 12, Oldham-Ramona-Rutland 8, Colman-Egan 1, Kadoka Area 1.