Like any club, what a GSA does is up to its members, but it often includes things like pitching in on community service projects and getting together for social activities. Research has shown that LGBT students hear fewer homophobic slurs, experience less harassment, have better attendance, and feel safer at schools that have GSAs. GSAs also allow LGBT and straight students to work together to take on issues that affect all students, including harassment and discrimination based on sexual orientation, gender identity, and gender expression. GSAs help make schools safer for all students by providing support, educating others in their school about LGBT issues, and engaging in awareness activities like the national Day of Silence.

GSAs provide a supportive environment for lesbian, gay, bisexual, and transgender (LGBT) students, as well as those who are perceived by others to be LGBT, are questioning their identity, have LGBT friends or family members, or just care about LGBT issues.

Gay-Straight Alliances, or GSAs, are student-led and student-organized school clubs that aim to create a safe, welcoming, and accepting school environment for all youth, regardless of sexual orientation or gender identity.