The measure was approved by the Senate, 37-18, on May 20.
Opponents of the bill said they worry inappropriate information would be taught, and children would be taught at too young of an age about gender and sexuality, types of sexual activities and abortion.
Even though the bill would allow parents and guardians to opt their children out of the curriculum, opponents said they believe many school districts would decide to opt out of the curriculum entirely. In that case, the bill would require that nothing about personal health and sexuality is taught in a district.
Advocates for the bill said it is needed because the content of sex education teaching varies throughout the state.