GLSEN (Gay, Lesbian & Straight Education Network) is a nonprofit organization focused on ensuring safe and affirming schools for LGBTQ+ students. Founded in 1990, it works to create inclusive environments through advocacy, education, and resources for students, educators, and families. The organization promotes policies that protect LGBTQ+ youth and provides training for educators to address issues of bullying and discrimination. GLSEN also conducts research to highlight the experiences of LGBTQ+ students, helping to inform practices and policies that foster acceptance and support in schools across the United States.