user: Question: Name the principal of Northfield Junior-Senior High School.
Columns: ['School', 'City / Town', 'Website', 'Size', 'Principal', 'Grades', 'IDOE Profile']
Types: ['text', 'text', 'text', 'real', 'text', 'text', 'text']
Sample row: ['Emmanuel Christian School', 'Wabash', '[www.ecswabash.org/ Website]', 105.0, 'Doug Phillips', 'PK-12', 'Snapshot']
SQL:

assistant: SELECT "Principal" FROM "Table" WHERE "School" = 'Northfield Junior-Senior High School';