Resources
Gender Spectrum is a great first resource when supporting trans students. They provide their own resources, forms and posters and they link to medical and legal information. In addition, they provide ways to connect with other families.
Teaching Outside the Binary is a website by Ace Schwarz. Ace identifies as non-binary and uses they/them/theirs pronouns. Ace is passionate about providing teachers, parents and administrators with resources to help make their classrooms inclusive for students.
Welcoming Schools, a project of the Human Rights Campaign, provides resources and workshops to educators in order to create safe and supportive learning environments for trans and gender non-conforming schools.
The Gay, Lesbian and Straight Education Network provides support to GSAs, emphasizes student leadership and action, and hosts conference workshop days for students and educators.
Teaching Tolerance is a resource put together by the Southern Poverty Law Center. Teachers and other professionals contribute short and comprehensive articles. They also offer films and professional development.
Teaching biology creates many opportunities to authentically incorporate student curiosity. The Next-Generation Science Standards (NGSS) expect students to ask questions about natural phenomena and then explain their answers using models. This website offers examples of adapting curriculum to NGSS and gender-inclusive standards, as well as resources for advocating to administration and others.

Posters and Classroom Signs
Gender Inclusive Signage [Gender Spectrum]
Know The Difference Poster [Teaching Tolerance]
Social Justice Posters [Amplifier]
One World Posters [Teaching Tolerance]
Syracuse Cultural Workers [Syracuse Cultural Workers]

Forms

Legal, Medical and Mental Health