There are lots of helpful websites about gender and promoting equality available, including:
#Unstereotype Initiative: https://www.unilever.com/news/news-and-features/Feature-article/2016/how-unstereotype-aims-to-change-the-way-we-see-gender.html
We are working towards becoming a Trans* Inclusive School and have found the Mermaids website to be a helpful website with lots of useful hints and tips and information of the law:www.mermaidsuk.org.uk