Ok, I stumbled across this while reading the presskit of It Might Get Loud on the officail site, it's in the part of "About the cast" and states "In 1963 Page enrolled in Sutton Art College in Surrey to pursue his other love, painting."
I don't know if the presskit simply takes information from some unspecified sources like we all do here, or does this piece of information actually come from Jimmy Page himself, since his art school time is shown in that movie.