The Safety and Opportunity for Girls Act of 2025 seeks to clarify Title IX protections by defining sex based on biological reproductive capacity and explicitly protecting sex-segregated spaces and programs in schools. The bill defines "female" and "male" according to reproductive system characteristics, and specifies that schools cannot be required to eliminate sex-separated bathrooms, locker rooms, or athletic and academic programs as a condition of receiving federal education funding. This legislation primarily affects schools and students by preventing the federal government from using funding restrictions to force changes to gender-separated facilities and programs. The bill contains no new funding allocations or specific implementation timelines, but rather restricts how existing Title IX authority can be exercised by federal education officials.