The Xavier Academy is the private school and training facility designed by Professor X to identify, train, and protect young mutants from all over the world. His initial students became the first team of X-Men, and though the Academy has identified and nurtured numerous other team members, its mission now extends well beyond just super heroics to include mutant rights activism, medical treatment, and psychological counseling for both young people and adults dealing with the manifestation of mutant powers.
Beast is a professor at the Academy, and teaches a number of science classes there.
A wing of the Academy was destroyed, badly damaging the overall structure of the school, when the Helicarrier was forced to make an emergency crash-landing on Academy grounds after being attacked by The Hand, who were apparently led by a mind-controlled Wolverine. (Assembly Required #1)