Name the gender for elsthorpe school
CREATE TABLE "central_hawke_s_bay_district" (
  "name" text,
  "years" text,
  "gender" text,
  "area" text,
  "authority" text,
  "decile" real,
  "roll" real
);
SELECT "gender" FROM "central_hawke_s_bay_district" WHERE "name"='elsthorpe school';