What did the little rock nine situation demonstrate?

The Little Rock Nine were a group of nine black students who enrolled at formerly all-white Central High School in Little Rock, Arkansas, in September 1957. Their attendance at the school was a test of Brown v. Board of Education, a landmark 1954 Supreme Court ruling that declared segregation in public schools unconstitutional. On September 4, 1957, the first day of classes at Central High, Governor Orval Faubus called in the Arkansas National Guard to block the black students’ entry into the high school. Later that month, President Dwight D. Eisenhower sent in federal troops to escort the Little Rock Nine into the school.