This bill, titled the "Title IX Clarification Act of 2026," aims to clarify the meaning of "sex" within the context of federal nondiscrimination requirements applicable to education programs or activities receiving federal financial assistance under Title IX of the Education Amendments of 1972. It amends Section 901(c) of the Education Amendments of 1972 to explicitly state that the term "sex" refers to an individual's biologically determined sex, as either male or female. The legislation further defines "female" as an individual who naturally has or would have the reproductive system that produces large gametes (ova), and "male" as an individual who naturally has or would have the reproductive system that produces small gametes (sperm), accounting for anomalies or disruptions. These amendments are intended to ensure that discrimination prohibited under Title IX is based on this biological understanding of sex. The provisions of this Act will take effect and apply to education programs and activities that receive federal financial assistance on or after its enactment date.