What is the decile for Westminster Christian School with a state integrated authority?
CREATE TABLE "upper_harbour_local_board" (
  "name" text,
  "years" text,
  "area" text,
  "authority" text,
  "decile" text,
  "roll" real
);
SELECT "decile" FROM "upper_harbour_local_board" WHERE "authority"='state integrated' AND "name"='westminster christian school';