What were the years for Redhill school, authority of state?
CREATE TABLE "papakura_local_board" (
  "name" text,
  "years" text,
  "gender" text,
  "area" text,
  "authority" text,
  "decile" real,
  "roll" real
);
SELECT "years" FROM "papakura_local_board" WHERE "authority"='state' AND "name"='redhill school';