CREATE TABLE table_262560_2 (institution VARCHAR2, joined VARCHAR2, left VARCHAR2)

What school joined the conference in 1996-97 and left it in 2011-12?
SELECT institution FROM table_262560_2 WHERE joined = "1996-97" AND left = "2011-12"
SELECT "institution" FROM "table_262560_2" WHERE "1996-97" = "joined" AND "2011-12" = "left"