From next year all schools will be required to provide age appropriate teaching for relationships and sex education - including LGBT relationships.
The move has prompted protests at some schools which have already implemented the changes.
At Anderton Park Primary School (pictured below), for months campaigners - mostly Muslim - held vocal vigils claiming the classes went against their faith.
It led to a temporary ban being imposed.
On Tuesday, that ban was made permanent with a High Court judge suggesting the demos had a "very significant adverse impact" on pupils, staff and local residents.
Welcoming the decision, Paul Whiteman, general secretary of the education union NAHT, said: "These protests have been widely and rightly condemned and they should now be brought to an end with immediate effect.
"We will continue to support schools where disagreements persist because diversity and equality are a matter of fact and a matter of law and learning about equality and diversity is not optional."
But with the lessons been rolled out across the country next year, Christian campaigner John Allman, who was involved in the High Court legal action against the council, called on believers not to give up.
"Don't be alarmed," he said.
"Don't do anything that's going to antagonise the LGBT community but simply assert the truth that this sort of teaching should not be introduced in their schools without an exercise of collective consultation of the parents and it needs to be adapted to be sensitive to the beliefs of the community."
The Department for Education has consistently stated that the lessons are age appropriate and take into account the religious backgrounds of pupils.
It also insists that the lessons "don't promote" LGBT relationships, rather, they educate.
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