The Iowa Conference reorganized in 1953, effective with the 1954–55 school year. Nine schools remained in the Conference: Buena Vista, Central, Dubuque, Iowa Wesleyan, Luther, Parsons, Simpson, Upper Iowa and Wartburg. William Penn was readmitted to the Conference in 1960, effective in the spring of 1962. Parsons left the Conference around 1963, while Iowa Wesleyan left effective June 1, 1965. Loras rejoined the Conference in 1986, increasing the Conference membership to nine schools, which continued until 1997 when Coe and Cornell left the Midwest Conference to join the IIAC. The Conference was at 11 schools until its 80th Anniversary year (2001–02) when William Penn decided to leave and switch its affiliation from the NCAA to the NAIA. The IIAC became a nine- school conference when Upper Iowa reclassified to NCAA Division II prior to the start of the 2003–04 academic year and fell back to eight schools with Cornell's return to the Midwest Conference following the 2011–12 academic year.