The way children learn about sex and relationships in schools is being updated for the first time in 20 years.
New government guidance is being introduced from September, which will see children learn about relationships from the age of four. LGBT content is also to be included.
The new topics will form part of the school curriculum in England from 2020, with teachers deciding how frequently to hold age-appropriate lessons.
In Manchester, a small number of parents have raised concerns with their schools about what will be taught and when.
The city council say schools are working with their parents to allay any concerns.
Sarah Rogers reports: