Title IX of the Education Amendments of 1972 prohibits sex discrimination in any education program receiving federal funding. For decades it primarily reshaped girls' and women's athletics. Since the early 2010s, federal guidance has used it to govern how schools handle sexual-misconduct complaints, and more recently to address gender identity.
Each administration has rewritten the regulations. Obama-era guidance (2011) emphasized survivor protections and the preponderance-of-the-evidence standard. The 2020 Trump-era rule strengthened cross-examination and due-process protections for accused students. The 2024 Biden rule expanded the law's scope, including gender-identity protections; portions have been litigated and partially blocked.
Athletic eligibility for transgender students, religious-school exemptions, and Title IX's interaction with state laws remain heavily contested terrain.