The Eastern Wisconsin Conference is a high school athletic conference made up of 8 Teams around the Lake Shore & Eastern Wisconsin area. Conference schools are members of the Wisconsin Interscholastic Athletic Association based in Stevens Point, Wisconsin.
The conference dates to the early 1980s, when members of the Packerland and Scenic Moraine conferences joined to form the Eastern Wisconsin Conference. In the 2015–2016 school year, as part of a 76-school northeastern Wisconsin realignment, longtime members Plymouth, Kewaskum, Campbellsport and Waupun left to join the East Central Conference and Brillion, Chilton, Roncalli and Valders joined from the Olympian Conference. Chilton and Roncalli were once members of the Eastern Wisconsin, leaving in 1999 and 2007 respectively.
| align=center bgcolor="#e5e5e5" | School | align=center bgcolor="#e5e5e5" | Mascot & Colors | align=center bgcolor="#e5e5e5" | Former Conference | align=center bgcolor="#e5e5e5" | Enrollment |
|---|---|---|---|---|---|---|---|
| Brillion HS | align=center style="background:red;color:white" | Lions | Olympian | 342 | |||
| Chilton HS | align=center style="background:#000080;color:gold" | Tigers | Olympian | 401 | |||
| Kiel HS | align=center style="background:purple;color:white" | Raiders | Packerland | 453 | |||
| New Holstein HS | align=center style="background:red;color:white" | Huskies | Packerland | 319 | |||
| Roncalli Catholic HS | align=center style="background:#000080;color:#B9D9EB" | Jets | Olympian | 223 | |||
| Sheboygan Falls HS | align=center style="background:purple;color:gold" | Falcons | Packerland | 480 | |||
| Two Rivers HS | align=center style="background:purple;color:gold" | Purple Raiders | Mid-Eastern | 496 | |||
| Valders HS | align=center style="background:red;color:white" | Vikings | Olympian | 298 | |||
| align=center bgcolor="#e5e5e5" | Team & Mascot | align=center bgcolor="#e5e5e5" | School | align=center bgcolor="#e5e5e5" | Year Joined | align=center bgcolor="#e5e5e5" | Year Left | align=center bgcolor="#e5e5e5" | Current Conference |
|---|---|---|---|---|---|---|---|---|---|
| align=center style="background:blue;color:gold" | Campbellsport Cougars | Campbellsport HS | 1999 | 2015 | Flyway | ||||
| align=center style="background:green;color:white" | Kewaskum Indians | Kewaskum HS | 1980? | 2015 | ECC | ||||
| align=center style="background:black;color:orange" | Plymouth Panthers | Plymouth HS | Unknown | 2015 | ECC | ||||
| align=center style="background:black;color:gold" | Waupun Warriors | Waupun HS | 2007 | 2015 | ECC | ||||