Following the Brown vs Board of education case, which was issued on May 17 in 1954, the Supreme Court ruled that segregation in public schools was unconstitutional. However, there was widespread resistance to the ruling and as such, the Court issued Brown II which ordered school districts to integrate "with all deliberate speed."
Though there were oppositions, a group of nine African-American teenagers were recruited to attend Central High School. This group became known as the Little Rock Nine. Unfortunately, the students were turned away by state troops so to counter this, President Eisenhower has troops from the US Army escort them into the school.
Due to the events of the enrollment of these black students in this all-white school, public schools in the present day are now more diverse. Students in public schools nowadays are not just African-American and Caucasian, but also Mexican and Asian.