CREATE TABLE table_68516 ("Round" FLOAT, "Name" CLOB, "Position" CLOB, "School" CLOB, "Signed" CLOB)

What is the University of Southern California's highest Round?
SELECT MAX("Round") FROM table_68516 WHERE "School" = 'university of southern california'
SELECT MAX("Round") FROM "table_68516" WHERE "School" = 'university of southern california'