The choropleth map shows magnitude of Average "Diversity Index" in each state in 2021. The diversity index in each university refers to the probability a person from any race meets another person of different race in the school. We take the average of each state and shows in this choropleth map. As you click each state, you will see a histogram for the corresponding state, which shows counts of school having different diversity index in that state. We hope this graph will help readers visualize racial diversity of students in US university during the pandemics.