Black Diamond Conference Current members Current members

| School | Location_Population | Nicknames | Colors | Years_Member | Enrollment_2013_14 |
|---|---|---|---|---|---|
| Western Division | Western Division | Western Division | Western Division | Western Division | Western Division |
| Chester High School | Chester, Illinois (8,400) | Yellow Jackets Lady Yellow Jackets | Orange Black | 2010–Present | 336 |
| Christopher High School | Christopher, Illinois (2,382) | Bearcats Lady Cats | Blue Orange | 1949-1973 1975–Present | 252 |
| Elverado High School | Elkville, Illinois (1,001) | Falcons Lady Falcons | Blue Gold | 1962–Present | 152 |
| Goreville High School | Goreville, Illinois (938) | Blackcats | Gold Black | 2011–Present | 179 |
| Sesser-Valier High School | Sesser, Illinois (2,128) | Red Devils | Maroon White | 1963–Present | 216 |
| Trico High School | Campbell Hill, Illinois (333) | Pioneers Lady Pioneers | Blue Gold | 1968-1971 2003–Present | 284 |
| Zeigler-Royalton High School | Zeigler, Illinois (1,801) | Tornadoes Lady Tornadoes | Navy Blue White | 1962–Present | 160 |