Campaigners have taken the Welsh government to court over sex education lessons they claim give prominence to LGBTQ+ themes.
A judicial review at the High Court in Cardiff heard a group of five parents want the right to take their children out of classes.
They claim Relationships and Sexuality Education guidance ignores traditional issues related to "family life".
The Welsh government denies the claims and said lessons were age appropriate.
It said the youngest children would be taught topics such as sharing, kindness and respect.
RSE is a mandatory part of the new curriculum for all primary and some secondary school children and was introduced in September 2022.
