What is the class of the Middletown High School team that is in the DSHA league?
CREATE TABLE "delaware_ice_hockey_teams" (
  "school" text,
  "nickname" text,
  "colors" text,
  "league" text,
  "class" text,
  "division" text
);
SELECT "class" FROM "delaware_ice_hockey_teams" WHERE "league"='dsha' AND "school"='middletown high school';