In a world of increasing acceptance it might be useful to not only know what the letters in this acronym stand for, but also what they mean. This website explains it simply as well as offering alternatives that may be used in other countries. I suggest familiarizing yourself with these terms and using them accordingly.
The Safe Schools Coalition is an initiative in Australia that aims to help school create a safe environment for LGBTIQ students, parents and teachers. They provide support in areas such as responding to homophobic behavior and creating inclusive policies and practices.
Stonewall is a British charity that provides excellent support and resources to schools. You can access these resources on the site, including a film with accompanied lesson plans. The film is truthful and relevant to lives of many teens and the fact that it was created as an educational resource means it is age appropriate for high-schoolers.
A short film highlights the fact that there are many more teens in the LGBTQ community than teachers may realise. This community can include family members, especially parents. I urge you to consider the fact that some of your students are part of this community and may be in need of your support.
If you are at a bit of a loss regarding some strategies to create a more accepting school environment, you will find some in this article. This not only helps members of the LGBT community, but can also educate other students on acceptance and tolerance.
Based in Michigan, this article explains the back story as to why we need to be more supportive of our LGBT teens (not that we really need reminding). I believe it is important to reflect on the article and use some of the tragic stories as inspiration to turn around the lives of LGBT students in schools today.