New Hampshire SB211

For purposes of this section, biological sex is either female or male as described by the sex listed on the athlete's official birth certificate issued at or near the time of the athlete’s birth. [...] V. Any team, sport, or athletic event designated for females, women, or girls shall only be open to students of the female sex. VI. Any team, sport, or athletic event designated for males, men, or boys shall be open to students of either sex.

Any school, school district, activities association, or organization under the control of the state board of education, or an institution of higher education under either the university system or the community college system that provides locker room facilities in connection with an athletic event shall provide separate facilities for male and female participants based on the biological sex.