CHELSEA — A male student competing on the Chelsea High School girls' track team is now ranked the second-best "female" runner in Massachusetts in the 200-meter Division 3 category.

Lilly Serrano, 17, captured two podium finishes at last week's Massachusetts Division 3 Indoor Track and Field Championships, taking third in the 55-meter dash and seventh in the 300-meter race. Earlier this month at the Greater Boston League Championship, Serrano placed first in both the 55-meter dash and high jump.

Serrano currently holds the top spot on Chelsea's girls team in five events: the 55-meter dash, 200-meter, 300-meter, 400-meter, and high jump. The athlete has been competing in girls' athletics since at least 2024.

The Massachusetts Interscholastic Athletic Association, which governs high school athletics in the state, is already under federal investigation. The U.S. Department of Education's Office for Civil Rights launched a Title IX probe earlier this month following President Trump's executive order on women's sports.

That investigation was prompted in part by a girls' basketball game between Collegiate Charter School of Lowell and KIPP Academy Lynn, where Lowell forfeited at halftime after multiple players were injured during plays involving a male athlete on the opposing team.

According to HeCheated.org, which tracks male participation in female athletics, 32 of the 83 girls' state titles taken by male athletes nationwide have occurred in Massachusetts — more than any other state. "Girls' sports have never truly existed in Massachusetts," a representative from the organization told Reduxx.

The Independent Council on Women's Sports condemned the MIAA's policies.

"For these female track athletes, a state championship is a once in a lifetime culmination of years of sacrifice, training, and pursuit of excellence," an ICONS spokesperson said. "That experience was irreparably damaged when a male athlete was allowed to compete in girls races and was celebrated atop girls podiums."

ICONS called for "swift, severe, and financially significant" enforcement action against the MIAA, arguing that "meaningful accountability, including substantial monetary penalties, is necessary to restore integrity to girls sports."

Chelsea High School and the MIAA did not respond to requests for comment.