[['school', 'location', 'nickname (s)', 'colors', 'years member'], ['cairo high school', 'cairo , illinois', 'pilots co - pilots', 'blue white', '1992 - 2003 (affiliate) 2003 - 2008'], ['carbondale university high school', 'carbondale , illinois', 'lynxes', 'maroon gray', '19631968'], ['carterville high school', 'carterville , illinois', 'lions lady lions', 'navy blue orange', '1949 - 1973 1975 - 2010'], ['elkville high school', 'elkville , illinois', 'bluebirds', 'blue white', '1949 - 1962'], ['sesser high school', 'sesser , illinois', 'red devils', 'maroon white', '1949 - 1963'], ['zeigler high school', 'zeigler , illinois', 'purple tornadoes', 'purple white', '1949 - 1962']]
Elkville High School and Zeigler High School both joined in 1949 and left in 1963
[ENT] and [ENT] both joined in [ENT] and left in [ENT]