Southwest Prairie Conference

The Southwest Prairie Conference is an athletic and competitive activity conference consisting of twelve public high schools in Northern Illinois. These high schools are all members of the Illinois High School Association.

History

The conference began competing during the 2006–2007 academic year, with Minooka Community High School, Morris Community High School, Oswego High School, Oswego East High School, Plainfield Central High School, Plainfield North High School, and Plainfield South High School being the founding members. All but Romeoville and Plainfield North made up the South Division of the Suburban Prairie Conference. Plainfield North was a newly established school and Romeoville came from the former South Inter-Conference Association North division. Morris left the SPC following the 2008–09 school year to join the North Central Illinois Conference. Newly established Plainfield East High School would replace them.
Joliet Central and Joliet West High Schools joined the conference from the Southwest Suburban Conference at the start of the 2016–2017 school year, following a 2014 decision. Both West Aurora High School, of the Upstate Eight Conference, and Yorkville High School, of the former Northern Illinois Big 12 Conference, were admitted to the SPC in 2018 and began conference play during the 2019–20 school year. In 2024, West Aurora High School will depart for the Upstate Eight Conference, with Bolingbrook High School replacing them.

Member schools

East Division

West Division

Membership timeline

DateFormat = yyyy
ImageSize = width:1000 height:auto barincrement:20
Period = from:2006 till:2025
TimeAxis = orientation:horizontal
PlotArea = right:20 left:0 bottom:50 top:5 #> to display a count on left side of graph, use "left:20" to suppress the count, use "left:20"<#
Colors = id:barcolor value:rgb
id:line value:black
id:bg value:white
id:Full value:rgb # Use this color to denote a team that is a member in all sports
id:FullxF value:rgb # Use this color to denote a team that is a member in all sports except for football

PlotData=
width:15 textcolor:black shift: anchor:from fontsize:s
bar:1 color:Full from:2006 till:2008 text: Morris
bar:2 color:Full from:2006 till:end text:Minooka
bar:3 color:Full from:2006 till:end text:Oswego
bar:4 color:Full from:2006 till:end text:Oswego East
bar:5 color:Full from:2006 till:end text:Plainfield Central
bar:6 color:Full from:2006 till:end text:Plainfield North
bar:7 color:Full from:2006 till:end text:Plainfield South
bar:8 color:Full from:2006 till:end text:Romeoville
bar:9 color:Full from:2008 till:end text:Plainfield East
bar:10 color:Full from:2016 till:end text:Joliet Central
bar:11 color:Full from:2016 till:end text:Joliet West
bar:12 color:Full from:2019 till:end text:Yorkville
bar:13 color:Full from:2019 till:2024 text:West Aurora
bar:14 color:Full from:2024 shift: till:end text:Bolingbrook
ScaleMajor = gridcolor:line unit:year increment:2 start:2006