The Strengthening Historically Black Graduate Institutions (HBGI) Program provides grants to assist institutions in establishing and strengthening their physical plants, development offices, endowment funds, academic resources and student services so that they may continue to participate in fulfilling the goal of equality of educational opportunity in graduate education. Subject to the availability of funds, the Secretary shall award program grants to institutions determined by the Secretary to be making a substantial contribution to the legal, medical, dental, veterinary, or other graduate education opportunities in mathematics, engineering, or the physical or natural sciences for Black Americans.