GLSEN's "Know Your Rights" 

ACLU "Know Your Rights" Guide for LGBT Students

Your Right to Be Safe in School
Public schools are legally required to protect all students from harassment. Under the U.S. Constitution, schools must address any harassment against you the same way they would for any other student. Under a federal law called Title IX that bans sex discrimination in schools that receive federal funding, public schools can’t ignore discrimination or harassment based on gender identity and expression. 
Lesbian, gay, bisexual, and transgender (LGBT) students face discrimination and harassment at school all too often. Unfortunately, many school officials know very little about how the law requires them to protect LGBT students. And sometimes they do know that they're breaking the law, but they think that students won't question their actions. That's why it's important for you to learn about your rights and what you can do if your school isn't treating you fairly! 
"Know Your Rights" Guide
LGBT Student Rights

Southern Poverty Law Center's "Students & LGBTQ Rights at School"

ACLU's "Know Your Rights" Guide

You have the right to express your gender, and it is unlawful for your peers or teachers to harass or treat you differently because of your gender. No matter what sex you were assigned at birth, you have the right to cut your hair and wear your clothes in a way that matches your gender identity. If you have to wear a drape or tuxedo for your senior portrait, you have the right to wear whichever matches your gender identity. You have the right to be called by the gender pronouns that you specify. You also have the right to play on the sports team that matches your gender identity. You have the right to use the restroom and locker room that match your gender identity.
The Advocate covers everything you need to know about coming out, including the latest stories on public figures who come out as LGBT. The process of coming out varies for each person. Some lesbian, gay, bisexual, and transgender people come out to friends and family at an early age, while others lead a more private life. Activists such as Harvey Milk advocated for all LGBT people to come out of the closet, in order to help increase visibility of the cause and sway the hearts and minds of the American public. For many, the process is difficult and ongoing throughout a lifetime.
"Students & LGBTQ Rights at School"
Know Your Rights Guide

Lambda Legal "How the Law Protects LGBTQ Youth"

National Center for Transgender Equality

Transgender students are protected from discrimination, bullying, and harassment under many federal and state laws. This includes Title IX, the federal law that bans sex discrimination in schools. Here’s some information about what rights transgender students have at school and how you can advocate for yourself or transgender students in your life.
The U.S. Constitution guarantees all people, including LGBTQ people, “equal protection of the laws.” State constitutions contain similar protections. This means that public schools can’t single out LGBTQ students for negative treatment just because school officials disapprove of being gay or feel uncomfortable around people whose gender identity or expression is different from theirs. When it comes to peer conflicts and abuse, courts have made clear that the federal Constitution prohibits public schools from taking bullying and harassment any less seriously just because the targets are LGBTQ. 
Lambda Legal "Know Your Rights"
"What Are My Rights at School?"