user: Question: What year was the name Mount Roskill Grammar School?
Columns: ['Name', 'Years', 'Gender', 'Local board', 'Suburb', 'Authority', 'Decile', 'Roll']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['ACG New Zealand International College', '9–13', 'Coed', 'Waitemata', 'Auckland CBD', 'Private', '7', 658.0]
SQL:

assistant: SELECT "Years" FROM "Table" WHERE "Name" = 'Mount Roskill Grammar School';