HST meaning in Governmental ?

The Harry S. Truman Scholarship is the premier graduate fellowship in the United States for public service leadership. It is a federally funded scholarship granted to U.S. undergraduate students for demonstrated leadership potential, academic excellence, and a commitment to public service. It is administered by the Harry S. Truman Scholarship Foundation, an independent federal agency based in Washington, D.C.

Congress created the scholarship in 1975 as a living memorial to the 33rd president of the United States. Instead of a statue, the Truman Scholarship is the official federal memorial to its namesake president. According to The Washington Post, the Truman Scholarship's "sole aim is to pick out people with potential to become leaders—then provide support to help them realize their aspirations." The scholarship supports public service oriented graduate study in the amount of $30,000.

Each year, between 50 and 60 university nominated candidates in their junior year are named Truman Scholars following a rigorous application process involving essays, recommendations, and an interview. Scholarships have historically been awarded to one individual from each U.S. state. Each university in the United States may only nominate four candidates annually, who represent the most accomplished nominees from that university.