CREATE TABLE table_70661 ("Name" CLOB, "Years" CLOB, "Gender" CLOB, "Area" CLOB, "Authority" CLOB, "Decile" FLOAT, "Roll" FLOAT)

What is the average roll for Fairfield school?
SELECT AVG("Roll") FROM table_70661 WHERE "Name" = 'fairfield school'
SELECT AVG("Roll") FROM "table_70661" WHERE "Name" = 'fairfield school'