Indiana High School Athletics Conferences: Allen County – Metropolitan Duneland Athletic Conference Duneland Athletic Conference

| School | Mascot | Location_ | Enrollment | IHSAA_Class | IHSAA_Football_Class | County |
|---|---|---|---|---|---|---|
| Chesterton | Trojans | Chesterton | 1986 | AAAA | AAAAA | 64 Porter |
| Crown Point | Bulldogs | Crown Point | 2532 | AAAA | AAAAA | 45 Lake |
| LaPorte | Slicers | LaPorte | 1839 | AAAA | AAAAA | 46 LaPorte |
| Lake Central | Indians | Saint John | 3225 | AAAA | AAAAA | 45 Lake |
| Merrillville | Pirates | Merrillville | 2396 | AAAA | AAAAA | 45 Lake |
| Michigan City | Wolves | Michigan City | 1909 | AAAA | AAAAA | 46 LaPorte |
| Portage | Indians | Portage | 2668 | AAAA | AAAAA | 64 Porter |
| Valparaiso | Vikings | Valparaiso | 2114 | AAAA | AAAAA | 64 Porter |