OMAHA, Neb. (AP) — The Omaha Public Schools Board has reviewed a proposed set of standards for its health and sex education curriculum.

The board discussed the proposed standards for different grade levels Monday. Proposed updates to the district’s human growth and development curriculum include a discussion of gender identity and gender roles starting in the sixth grade, a lesson on sexual orientation and gender identity starting in seventh grade and the inclusion of abortion and emergency contraception in 10th-grade lessons on birth control.

The board is expected to vote on a final plan for the district’s human growth and development curriculum on Jan. 20.

Parents can opt to remove their children from parts or all of the classes teaching the curriculum.