Bible literacy bills were introduced in Alabama, Iowa and West Virginia in 2018 but none of them passed, USA Today reported.
Kentucky passed a Bible studies bill. Tennessee passed a slightly different one, USA Today reported.
Supporters say the optional classes teach the Bible’s literary and historical significance while critics say the curriculum violates constitutional safeguards against separation of church and state.
"State legislators should not be fooled that these bills are anything more than part of a scheme to impose Christian beliefs on public schoolchildren," Rachel Laser, president and CEO of Americans United for Separation of Church and State, told USA Today.