24 CFR § 3.220 - Admissions.
(b) Administratively separate units. For the purposes only of this section, §§ 3.225 and 3.230, and §§ 3.300 through 3.310, each administratively separate unit shall be deemed to be an educational institution.
(c) Application of §§ 3.300 through 3.310. Except as provided in paragraphs (d) and (e) of this section, §§ 3.300 through 3.310 apply to each recipient. A recipient to which §§ 3.300 through 3.310 apply shall not discriminate on the basis of sex in admission or recruitment in violation of §§ 3.300 through 3.310.
(d) Educational institutions. Except as provided in paragraph (e) of this section as to recipients that are educational institutions, §§ 3.300 through 3.310 apply only to institutions of vocational education, professional education, graduate higher education, and public institutions of undergraduate higher education.
(e) Public institutions of undergraduate higher education. §§ 3.300 through 3.310 do not apply to any public institution of undergraduate higher education that traditionally and continually from its establishment has had a policy of admitting students of only one sex.