"So many teenagers are hurting themselves and suffering because they feel marginalised and freakish.
"By having neutral toilets you are not only creating a safer environment for LGBT and students, but also teaching acceptance and tolerance to other students. I hope other schools follow suit," she said.
Wellington High principal Nigel Hanton told the Herald the school had a long history of being inclusive and celebrating diversity.
"The school is committed to providing a safe and supportive environment where every student can feel secure," he said.
Mr Hanton said a group of students instigated the idea. The local community and board of trustees then supported the idea.
Onslow principal Peter Leggat said its new bathrooms were still at the planning stage, but construction was due to start in the next few weeks.