Question: What is the average roll of a school with State authority and a decile of 9?
SQL: SELECT AVG("Roll") FROM "2-12300697-1" WHERE "Authority" = 'State' AND "Decile" = 9.0;

Question: Which area has State authority and a roll fewer than 18?
SQL: SELECT "Area" FROM "2-12300697-1" WHERE "Authority" = 'State' AND "Roll" < 18.0;

Question: What is the roll for the school with State authority and a decile of 9?
SQL: SELECT "Roll" FROM "2-12300697-1" WHERE "Authority" = 'State' AND "Decile" = 9.0;

Question: What is the average decile of Westport South School?
SQL: SELECT AVG("Decile") FROM "2-12300697-1" WHERE "Name" = 'Westport South School';