▁ 1 9 9 0 s ▁from ▁the ▁R acco on ▁River ▁Conference , ▁whose ▁members ▁were ▁mostly ▁rapidly ▁growing ▁schools ▁immediately ▁outside ▁of ▁Des ▁Mo ines . ▁Col f ax - M ingo ▁and ▁Ple asant ville ▁were ▁added ▁to ▁the ▁conference ▁in ▁ 1 9 9 7 , ▁following ▁the ▁dem ise ▁of ▁the ▁Des ▁Mo ines ▁River ▁Conference . ▁Ple asant ville ▁then ▁left ▁the ▁league ▁in ▁ 2 0 0 1 . ▁In ▁ 2 0 0 6 , ▁Pra irie ▁City - Mon roe ▁joined ▁the ▁league ▁from ▁the ▁South ▁Central ▁Conference . ▁In ▁ 2 0 0 7 , ▁Madrid ▁left ▁for ▁the ▁West ▁Central ▁Conference ▁and ▁was ▁replaced ▁by ▁former ▁R acco on ▁River ▁Conference ▁member ▁Jefferson - Sc r anton . ▁In ▁ 2 0 0 8 , ▁West ▁Marshall ▁left ▁for ▁the ▁N IC L . ▁The ▁ 2 0 0 9 ▁season ▁saw ▁Wood ward - Gr anger ▁jump ▁to ▁the ▁West ▁Central ▁Conference ▁and ▁Nev ada ▁join ▁the ▁league ▁from ▁the ▁R acco on ▁River ▁Conference . ▁In ▁ 2 0 1 0 ▁season , ▁Col o ▁N es co ▁jump ed ▁to ▁Iowa ▁Star ▁Conference ▁in ▁every ▁sport ▁except ▁sharing ▁with ▁C MB ▁in ▁s occer . ▁Og den ▁left ▁the ▁conference ▁in ▁ 2 0 1 1 ▁in ▁order ▁to ▁join ▁former ▁conference ▁fo es ▁Wood ward - Gr anger ▁and ▁Madrid ▁in ▁the ▁West ▁Central ▁Conference . ▁Bond ur ant - F arr ar ▁made ▁the ▁jump ▁to ▁R