CREATE TABLE table_28522 ("Institution" TEXT, "Location" TEXT, "Founded" FLOAT, "Type" TEXT, "Enrollment" FLOAT, "Joined" TEXT, "Left" TEXT, "Nickname" TEXT, "Primary Conference when joining the MSFA" TEXT, "Current Primary Conference" TEXT)

What school joined the conference in 1996-97 and left it in 2011-12?
SELECT "Institution" FROM table_28522 WHERE "Joined" = '1996-97' AND "Left" = '2011-12'
SELECT "Institution" FROM "table_28522" WHERE "Joined" = '1996-97' AND "Left" = '2011-12'