user: Question: What is the University of Southern California's highest Round?
Columns: ['Round', 'Name', 'Position', 'School', 'Signed']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Bob Stinson', 'C', 'Miami-Dade College', 'Yes']
SQL:

assistant: SELECT MAX("Round") FROM "Table" WHERE "School" = 'University of Southern California';