| July/Aug. | 26-2 | | Iowa High School Activities Non-Contact Period | 4 |
| August | 3 | IGHSAU | Practice Starts: Tennis | 5 |
| August | 3 | IHSMA | Starting Date: All-State Camp | 5 |
| August | 10 | IHSAA & IGHSAU | Practice Starts: Fall Sports | 6 |
| August | 12 | IHSAA & IGHSAU | New Athletic Directors Workshop | 6 |
| August | 15 | IHSSA | Judges/Coaches Workshop | 6 |
| September | 23 | IGHSAU | Tennis: Regional Meets, Singles & Doubles (All) | 12 |
| September | 26 | IGHSAU | Tennis: Regional Meets, Team (All) | 12 |
| September | 30 | IGHSAU | Tennis: Regional Meets, Team (All) | 13 |
| October | 3 | IGHSAU | Tennis: Regional Meets, Team (All) | 13 |
| October | 5-6 | IHSAA | Golf: Fall District Meets (4A) | 14 |
| October | 7-8 | IGHSAU | Tennis: State Meet, Singles & Doubles (All) | 14 |
| October | 9-10 | IHSSA | Coaches Convention | 14 |
| October | 10 | IHSMA | Marching Band: State Festival, North | 14 |
| October | 12-13 | IGHSAU | Tennis: State Meet, Team (All) | 15 |
| October | 12-13 | IHSAA | Golf: Fall State Meet (4A) | 15 |
| October | 17 | IHSMA | Marching Band: State Festival, South | 15 |
| October | 19 | IGHSAU | Volleyball: Regional Tournament (1A, 2A) | 16 |
| October | 20 | IGHSAU | Volleyball: Regional Tournament (3A, 4A, 5A) | 16 |
| October | 21 | IHSMA | All-State Festival: Piano Auditions | 16 |
| October | 21 | IHSAA & IGHSAU | Cross Country: State Qualifying Meets (3A, 4A) | 16 |
| October | 21 | IGHSAU | Volleyball: Regional Tournament (1A, 2A) | 16 |
| October | 22 | IHSAA & IGHSAU | Cross Country: State Qualifying Meets (1A, 2A) | 16 |
| October | 22 | IGHSAU | Volleyball: Regional Tournament (3A, 4A, 5A) | 16 |
| October | 23 | IHSAA | Football: Playoffs, First Round (8P, A, 1A, 2A) | 16 |
| October | 24 | IHSMA | All-State Festival: District Auditions | 16 |
| October | 26 | IGHSAU | Volleyball: Regional Tournament (1A, 2A) | 17 |
| October | 27 | IGHSAU | Volleyball: Regional Tournament (3A, 4A, 5A) | 17 |
| October | 28 | IGHSAU | Volleyball: Regional Tournament (1A, 2A) | 17 |
| October | 30 | IHSAA | Football: Playoffs, Round of 16 (All) | 17 |
| October | 30 | IHSAA & IGHSAU | Cross Country: State Meet (1A, 2A) | 17 |
| October | 31 | IHSAA & IGHSAU | Cross Country: State Meet (3A, 4A) | 17 |
| November | 2 | IGHSAU | Practice Starts: Wrestling; Bowling (Girls) | 18 |
| November | 2-5 | IGHSAU | Volleyball: State Tournament (All) | 18 |
| November | 5 | IGHSAU | Swimming & Diving: Diving, Regional Meet | 18 |
| November | 5 | IHSAA | Football: Playofs, Quarterfinals (8P) | 18 |
| November | 6 | IHSAA | Football: Playofs, Quarterfinals (11P) | 18 |
| November | 7 | IGHSAU | Swimming & Diving: Swimming, Regional Meet | 18 |
| November | 9 | IHSAA & IGHSAU | Practice Starts: Basketball (Girls), Swimming (Boys) | 19 |
| November | 9 | IHSAA & IGHSAU | New Athletic Directors Workshop, Part 2 | 19 |
| November | 11 | IHSAA | Football: Playoffs, Semifinals (8P) | 19 |
| November | 12 | IHSAA | Football: Playoffs, Semifinals (A, 4A) | 19 |
| November | 12-13 | IGHSAU | Swimming & Diving: State Meet | 19 |
| November | 13 | IHSAA | Football: Playoffs, Semifinals (1A, 5A) | 19 |
| November | 14 | IHSAA | Football: Playoffs, Semifinals (2A, 3A) | 19 |
| November | 16 | IHSAA | Practice Starts: Basketball, Wrestling, Bowling (Boys) | 20 |
| November | 19-20 | IHSAA | Football: Playoffs, Finals (All) | 20 |
| November | 19-21 | IHSMA | All-State Music Festival | 20 |
| January | 8-9 | IHSSA | State Debate: State Tournament | 27 |
| January | 18 | IGHSAU | Wrestling: Regional Dual Meets | 29 |
| January | 22 | IGHSAU | Wrestling: State Dual Tournament | 29 |
| January | 23 | IHSSA | District Contest: Large Group | 29 |
| January | 25 | IHSMA | Jazz Band: State Festival, North | 30 |
| January | 29 | IGHSAU | Wrestling: State Qualifying Meet | 30 |
| January | 30 | IHSMA | Jazz Choir: State Festival, North | 30 |
| January | 30 | IHSMA | Jazz Band: State Festival, South | 30 |
| February | 1 | IHSMA | Jazz Choir: State Festival, South | 31 |
| February | 1 | IGHSAU | Bowling: State Qualifying Meets | 31 |
| February | 2 | IHSAA | Wrestling: Regional Dual Meets | 31 |
| February | 4-5 | IGHSAU | Wrestling: State Tournament | 31 |
| February | 6 | IHSSA | State Contest: Large Group | 31 |
| February | 6 | IHSAA | Wrestling: State Dual Tournament | 31 |
| February | 6 | IHSAA | Swimming: District Meets | 31 |
| February | 8 | IHSMA | Show Choir: State Festival (All) | 32 |
| February | 9-11 | IGHSAU | Bowling: State Tournaments | 32 |
| February | 11 | IGHSAU | Basketball: Regional Tournament (1A) | 32 |
| February | 12 | IHSAA | Basketball: District Tournament (1A) | 32 |
| February | 12-13 | IHSAA | Swimming: State Meet | 32 |
| February | 13 | IGHSAU | Basketball: Regional Tournament (2A, 3A) | 32 |
| February | 13 | IHSAA | Wrestling: District Meets (All) | 32 |
| February | 15 | IHSAA | Basketball: District Tournament (1A, 2A) | 33 |
| February | 15-16 | IHSAA | Bowling: State Qualifying Meets | 33 |
| February | 16 | IGHSAU | Basketball: Regional Tournament (1A, 2A) | 33 |
| February | 17 | IGHSAU | Basketball: Regional Tournament (3A, 4A, 5A) | 33 |
| February | 17-20 | IHSAA | Wrestling: State Traditional Tournament (All) | 33 |
| February | 18 | IHSAA | Basketball: District Tournament (1A, 2A) | 33 |
| February | 19 | IGHSAU | Basketball: Regional Tournament (1A, 2A) | 33 |
| February | 19-20 | IHSSA | All-State Festival: Large Group | 33 |
| February | 20 | IGHSAU | Basketball: Regional Tournament (3A, 4A, 5A) | 33 |
| February | 22 | IHSAA & IGHSAU | Practice Starts: Track & Field | 34 |
| February | 22 | IHSAA | Basketball: Substate Tournament (3A, 4A) | 34 |
| February | 22-24 | IHSAA | Bowling: State Tournaments | 34 |
| February | 23 | IGHSAU | Basketball: Regional Tournament (4A, 5A) | 34 |
| February | 23 | IHSAA | Basketball: District Tournament (1A, 2A) | 34 |
| February | 24 | IGHSAU | Basketball: Regional Tournament (1A, 2A) | 34 |
| February | 25 | IHSAA | Basketball: Substate Tournament (3A) | 34 |
| February | 26 | IHSAA | Basketball: Substate Tournament (4A) | 34 |
| February | 27 | IHSAA | Basketball: Substate Tournament (1A, 2A) | 34 |
| February | 27 | IHSSA | District Contest: Individual Events | 34 |
| March | 1 | IHSAA | Basketball: Substate Tournament (3A) | 35 |
| March | 1-6 | IGHSAU | Basketball: State Tournament (All) | 35 |
| March | 2 | IHSAA | Basketball: Substate Tournament (4A) | 35 |
| March | 8-12 | IHSAA | Basketball: State Tournament (All) | 36 |
| March | 9 | IHSMA | State Festival: Commercial Bands | 36 |
| March | 13 | IHSSA | State Contest: Individual Events | 36 |
| March | 15 | IGHSAU | Practice Starts: Golf | 37 |
| March | 15 | IHSAA | Practice Starts: Golf, Soccer, Tennis | 37 |
| March | 22 | IGHSAU | Practice Starts: Soccer | 38 |
| April | 3 | IHSMA | State Festival: Solos and Ensembles (3A) | 39 |
| April | 5 | IHSSA | All-State Festival: Individual Events | 40 |
| April | 10 | IHSMA | State Festival: Solos and Ensembles (2A) | 40 |
| April | 17 | IHSMA | State Festival: Solos and Ensembles (1A, 4A) | 41 |
| May | 3 | IHSAA & IGHSAU | Practice Starts: Baseball, Softball | 44 |
| May | 7 | IHSMA | State Festival: Large Group (2A, 4A); Orchestra: Quad Cities area only | 44 |
| May | 7 | IHSMA | State Festival: Large Group (1A, 3A) | 44 |
| May | 8 | IHSMA | State Festival: Large Group (2A, 4A) | 44 |
| May | 12 | IHSAA | Golf: Sectional Meets (3A, 2A, 1A) | 45 |
| May | 13 | IHSAA & IGHSAU | Track & Field: State Qualifying Meets (All) | 45 |
| May | 14 | IGHSAU | Golf: Regional Meets (1A, 2A) | 45 |
| May | 15 | IHSAA | Tennis: District Meets, Singles & Doubles (All) | 45 |
| May | 17 | IHSAA | Golf: District Meets (3A, 2A, 1A) | 46 |
| May | 17 | IHSAA | Soccer: Substate Tournament (1A, 2A) | 46 |
| May | 18 | IHSAA | Soccer: Substate Tournament (3A, 4A) | 46 |
| May | 18 | IHSMA | Showcase: Outstanding Performance | 46 |
| May | 19 | IGHSAU | Golf: Regional Meets (All) | 46 |
| May | 19 | IHSAA | Tennis: Substate Meets, Team (All) | 46 |
| May | 20-22 | IHSAA & IGHSAU | Track & Field: State Meet | 46 |
| May | 24 | IHSAA | Soccer: Substate Tournament (All) | 47 |
| May | 24-25 | IHSAA | Golf: State Meet (3A, 2A, 1A) | 47 |
| May | 25 | IGHSAU | Soccer: Regional Tournament (1A) | 47 |
| May | 25-26 | IHSAA | Tennis: State Meet, Singles & Doubles (All) | 47 |
| May | 26 | IHSAA | Soccer: Substate Tournament (All) | 47 |
| May | 27 | IGHSAU | Soccer: Regional Tournament (All) | 47 |
| May | 27-28 | IGHSAU | Golf: State Meet (All) | 47 |
| June | 1 | IHSAA | Soccer: State Tournament, Quarterfinals (All) | 48 |
| June | 1 | IGHSAU | Soccer: Regional Tournament (All) | 48 |
| June | 1-2 | IHSAA | Tennis: State Tournament, Team (All) | 48 |
| June | 3 | IGHSAU | Soccer: Regional Tournament (All) | 48 |
| June | 3-5 | IHSAA | Soccer: State Tournament (All) | 48 |
| June | 7-8 | IGHSAU | Soccer: State Tournament, Quarterfinals (All) | 49 |
| June | 9 | IHSAA & IGHSAU | Golf: State Coed Meets | 49 |
| June | 9 | IHSAA & IGHSAU | Tennis: State Coed Meets | 49 |
| June | 10 | IGHSAU | Soccer: State Tournament, Semifinals (All) | 49 |
| June | 12 | IGHSAU | Soccer: State Tournament, Finals (All) | 49 |
| July | 3 | IHSAA | Baseball: District Tournament (1A, 2A) | 52 |
| July | 5 | IGHSAU | Softball: Regional Tournament (1A, 2A) | 1 |
| July | 6 | IHSAA | Baseball: District Tournament (1A, 2A) | 1 |
| July | 7 | IGHSAU | Softball: Regional Tournament (1A, 2A) | 1 |
| July | 8 | IGHSAU | Softball: Regional Tournament (3A, 4A, 5A) | 1 |
| July | 9 | IHSAA | Baseball: Substate Tournament (3A, 4A) | 1 |
| July | 9 | IGHSAU | Softball: Regional Tournament (1A, 2A) | 1 |
| July | 10 | IHSAA | Baseball: District Tournament (1A, 2A) | 1 |
| July | 10 | IGHSAU | Softball: Regional Tournament (3A, 4A, 5A) | 1 |
| July | 12 | IHSAA | Baseball: Substate Tournament (3A, 4A) | 2 |
| July | 12 | IGHSAU | Softball: Regional Tournament (1A, 2A) | 2 |
| July | 13 | IGHSAU | Softball: Regional Tournament (3A, 4A, 5A) | 2 |
| July | 13 | IHSAA | Baseball: Substate Tournament (1A, 2A) | 2 |
| July | 14 | IHSAA | Baseball: Substate Tournament (3A, 4A) | 2 |
| July | 19-23 | IHSAA | Baseball: State Tournament (All) | 3 |
| July | 19-23 | IGHSAU | Softball: State Tournament (All) | 3 |
| July/Aug. | 25-1 | | Iowa High School Activities Non-Contact Period | 4 |
