The Xavier Institute was one of the fictional schools situated at X-Mansion in the Marvel Universe, published in American comic books by Marvel Comics. The school was originally opened as Xavier's School for Gifted Youngsters by Professor Xavier and served as the home of the X-Men and New Mutants. Students lived under pretence that they were students of Professor X to keep their mutant nature a secret from the outside world. The school was eventually renamed as Xavier Institute for Higher Learning. At one point of its history, Massachusetts Academy was reopened by Banshee and White Queen but as the branch of Xavier Institute to train Generation X. When the secrecy of mutant school became public, its student body and staff expanded tremendously. Most of these students were assigned into squads with an advisor, when Cyclops and White Queen took over Xavier Institute. After the events of M-Day, squads were disbanded and later the school was closed. The school was reopened as Jean Grey School for Higher Learning under the leadership of Wolverine and Shadowcat. Jean Grey School also received transferred students from New Charles Xavier School for Mutants after it was closed. The school was briefly relocated to Limbo for the protection from Terrigen Mist. Later it was moved back to the Earth, and renamed as Xavier Institute for Mutant Education and Outreach when Storm took over the school. Notations:

Staff members

Student body

1963–1970s

1980s

1990s

2000s

2010s