The U.S. Department of Education says it opened an investigation Monday into Smith College, an all-women's institution in Massachusetts, for admitting transgender women.

In a press release, the department says Smith has been "admitting biological men."

The probe by the department's Office of Civil Rights will look at whether the college violated Title IX, a 1972 law forbidding discrimination based on sex in education.

The move is the latest by the Trump administration - whose rhetoric has frequently included attacks on trans people - to limit transgender rights in the U.S. The administration has said that Title IX prevents trans women from participating in women's sports, suing several states and launching investigations into schools for not complying.

Smith College, a private liberal arts school founded in 1871, has admitted trans women since 2015, along with many other elite women's colleges.

The school's admission policies drew attention and sparked on-campus activism in 2013, when a trans high school senior was denied acceptance because her gender identity did not match the one on her financial aid forms.

Its website now says that "any applicants who self-identify as women; cis, trans, and nonbinary women" are eligible to apply to the school. Advocates have supported the shift over the years, saying that women's colleges were founded to educate those marginalized because of their gender.

The number of women's colleges in the U.S. has declined from more than 200 to just 30 as of fall of 2023, according to the Women's College Coalition.

A college spokesperson did not immediately respond to an emailed request for comment.

According to the department's news release, Title IX contains an exception that allows colleges to be all-male or all-female, but it only applies "on the basis of biological sex difference, not subjective gender identity."

The release quotes Assistant Secretary for Civil Rights Kimberly Richey as saying, "An all-women's college loses all meaning if it is admitting biological males. Allowing biological males into spaces designed for women raises serious concerns about privacy, fairness, and compliance under federal law. The Trump Administration will continue to uphold the law and fight to restore common sense." 

The investigation into Smith College stems from a complaint filed with the Office of Civil Rights in June 2025 by the conservative legal group Defending Education.

"DE and its members oppose, among other things, discrimination on the basis of sex in America's K-12 schools and institutions of higher education," the organization said in a news release.

During the Biden administration, new Title IX regulations were issued to prevent discrimination based on sexual orientation or gender identity. However, those were struck down by a federal judge in January 2025 who decided the rules had legal shortcomings.