21-Day Snacking Challenge participating school districts:
| School District | Registration | Registration Dates |
|---|---|---|
| Ector County | Closed | 9/3/24 - 9/6/24 |
| Richardson | Closed | 9/9/24 - 9/15/24 |
| Frisco | Closed | 9/16/24 - 9/23/24 |
| Northwest | Closed | 9/16/24 - 9/24/24 |
| Weatherford | Closed | 9/23/25 - 9/30/24 |
| Lewisville | Closed | 9/23/24 - 9/30/24 |
| Allen | Closed | 9/25/24 - 10/1/24 |
| Irving | Closed | 9/29/24 - 10/5/24 |
| Community | Closed | 9/30/24 - 10/7/24 |
| Fort Worth | Closed | 10/7/24 - 10/12/24 |
| Arlington | Closed | 10/7/24 - 10/14/24 |
| Birdville | Closed | 10/21/24 - 10/25/24 |
| Rockwall | Closed | 10/21/24 - 10/28/24 |
| School District | Registration | Registration Dates |
|---|---|---|
| Plano | Closed | 1/13/25 – 1/21/25 |
| Dallas | Closed | 1/15/25 - 1/22/25 |
| Sanger | Closed | 1/16/25 - 1/22/25 |
| Prosper | Closed | 1/20/25 - 1/24/25 |