The bill had its first public hearing Thursday after being introduced in late January.
State Rep. Rick Brattin (R), who sponsored the bill, told a local TV station last week that teaching only evolution in school was "indoctrination."
"Our schools basically mandate that we teach one side," he told KCTV. "It is an indoctrination because it is not objective approach."
The bill is one of several anti-evolution proposals that have already appeared in statehouses across the country; the Daily Beast counted four states (Missouri, Oklahoma, South Dakota and Virginia) where legislation had been introduced. The proposals would allow for a range of approaches to evolution, from presenting a "debate" over evolution versus creationism to requiring that local school boards allow intelligent design to be included in biology courses.