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The Greater Kansas City Suburban Conference (GKCSC) is a high school athletic conference comprising large to mid-size high schools located in the greater Kansas City, Missouri metro area. The conference members are located in Buchanan, Cass, Clay, Jackson, and Platte counties.

The GKCSC is divided into sub-conferences, based on school size, and is re-structured on a regular basis to account for changes in enrollment. As of the 2023-24 school year, there are five conferences, with gold being the largest schools, and silver,red, white and blue conferences in descending order of enrollment^[1]