user: ### NOW ANSWER:
Question: What is the lowest decile that Ohau School has?
Columns: ['Name', 'Years', 'Gender', 'Area', 'Authority', 'Decile', 'Roll']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['Coley Street School', '1–8', 'Coed', 'Foxton', 'State', 2.0, 253.0]
SQL:

assistant: SELECT MIN("Decile") FROM "Table" WHERE "Name" = 'Ohau School';