| Kickapoo High School | - | Varsity | Medium | 0 | | |
| Killeen High School | - | Varsity | Small | 0 | | |
| Kimberly High School | - | Varsity | Medium | 0 | | |
| King George High School | - | Junior | - | 0 | | |
| Kings High School | - | Varsity | Large | 0 | | |
| Kings High School | - | Varsity | Medium | 0 | | |
| Kings High School | - | Varsity | Small | 0 | | |
| Kings High School | - | Varsity | Medium | 0 | | |
| Kings High School | - | Varsity | - | 0 | | |
| Kings High School | - | Varsity | - | 0 | | |
| Kings Mountain High School | - | Varsity | - | 0 | | |
| Kingwood High School | - | Varsity | Large | 0 | | |
| Kingwood High School | - | Junior | - | 0 | | |
| Kingwood High School | - | Junior | - | 0 | | |
| Kingwood High School | - | Varsity | Large | 0 | | |
| Kinkaid High School | - | Varsity | - | 0 | | |
| Kinston High School | - | Varsity | - | 0 | | |
| KIPP Cheerleading | - | Varsity | - | 0 | | |
| KIPP DC College Prep | - | Varsity | - | 0 | | |
| KIPP East End High School | - | Varsity | Small | 0 | | |
| KIPP East End High School | - | Varsity | Small | 0 | | |
| KIPP East End High School | - | Varsity | Small | 0 | | |
| KIPP East End High School | - | Varsity | Small | 0 | | |
| Kipp NYC College Prep | - | Varsity | Medium | 0 | | |
| KIPP University Prep | - | Varsity | Medium | 0 | | |
| Kirbyville High School | - | Varsity | Large | 0 | | |
| Kirbyville High School | - | Varsity | Medium | 0 | | |
| Kirkwood High School | - | Varsity | Large | 0 | | |
| Kirkwood High School | - | Varsity | Small | 0 | | |
| Kittatinny Regional High School | - | Varsity | - | 0 | | |
| Kittatinny Regional High School | - | Varsity | - | 0 | | |
| Klein Cain High School | - | Varsity | Large | 0 | | |
| Klein Collins High School | - | Varsity | Large | 0 | | |
| Klein Collins High School | - | Varsity | Medium | 0 | | |
| Klein Oak High School | - | Varsity | - | 0 | | |
| Knox Central High School | - | Varsity | Medium | 0 | | |
| Knox Central High School | - | Varsity | Medium | 0 | | |
| Kossuth High School | - | Varsity | Large | 0 | | |
| Kossuth High School | - | Varsity | Large | 0 | | |
| Kossuth High School | - | Varsity | - | 0 | | |
| Kountze High School | - | Varsity | Medium | 0 | | |
| Kountze High School | - | Varsity | Medium | 0 | | |
| Kountze High School | - | Varsity | Medium | 0 | | |
| Krum High School | - | Varsity | Medium | 0 | | |
| Kuna High School | - | Varsity | Large | 0 | | |
| Kutztown High School | - | Varsity | - | 0 | | |
| L D Bell High School | - | Varsity | Large | 0 | | |
| La Cueva High School | - | Varsity | - | 0 | | |
| La Cueva High School | - | Varsity | Large | 0 | | |
| La Cueva High School | - | Varsity | Large | 0 | | |