Any person who was once enrolled at the college is called an alumnus/alumna. Most people consider alumni to be only those who have graduated from the college, but the distinction is extended to all who have attended. A graduate is any person who received a degree from Knox.
Alumni will be flooding the school on June 2nd, stealing commencement viewing spots from real students who just want to see their friends graduate.
Alumni do not remember their way to the bookstore so be kind when five million of them ask you to lead them to the bookstore.